Updates on the dermatopathology of pregnancy-associated skin conditions

Pathologists provide valuable input in the dermatological care of pregnant patients in various contexts. This article provides dermatopathology updates on cutaneous changes associated with pregnancy, organized based on the following classification system: physiological skin changes in pregnancy, specific dermatoses of pregnancy, dermatoses modified in pregnancy, and skin neoplasms in pregnancy. Awareness of the impact of pregnancy on the skin by pathologists is important, as this is an opportunity to contribute to diagnostic precision in this patient population.

Psoriasis and adverse pregnancy outcomes: A nationwide case-control study in 491,274 women in Denmark

Background

The chronic systemic inflammation associated with psoriasis supposedly creates an undesirable milieu for a pregnancy, resulting in an increased risk of adverse pregnancy outcomes (APOs).

Objective

To investigate the association between psoriasis and APOs as well as how the association differs according to psoriasis severity (mild and moderate-to-severe).

Methods

This nationwide register-based case-control study collected data from 1973 to 2017. Cases were APOs (spontaneous abortion, ectopic pregnancy [EP], intrauterine fetal death, and stillbirth). Singleton live births were controls. Adjusted logistic regression models were used for statistical analyses.

Results

In total, 42,041 (8.56%) APOs and 449,233 (91.44%) controls were included. EP was the only APO that was found to be statistically associated with psoriasis (odds ratio, 1.34; 95% CI, 1.06-1.68). Odds ratio for EP was the highest for women with moderate-to-severe psoriasis (odds ratio, 2.77; 95% CI, 1.13-6.76). The absolute risk of EP was 2.48% higher for women with moderate-to-severe psoriasis compared with women without psoriasis (3.98% vs 1.50%).

Limitations

No access to clinical data confirming psoriasis severity.

Conclusion

The present study found a significant association between EP and psoriasis (absolute risk of 3.98%). As EP is the leading cause of maternal morbidity and mortality in the first trimester of pregnancy, our findings call for particular care for women of reproductive age with psoriasis.

Maternal and neonatal outcomes of births to women with psoriasis: a population-based cohort of 13 million births

PURPOSE

Psoriasis is a common auto-immune disease affecting the skin and joints for which the current literature remains limited and contradictory in the context of pregnancy. The purpose of our study was to evaluate the association between psoriasis in pregnancy and maternal and newborn outcomes.

METHODS

A population based retrospective cohort study was conducted using the 1999-2015 United States' Healthcare Cost and Utilization Project Nationwide Inpatient Sample. ICD-9 codes were used to identify delivery admissions to women with or without psoriasis, as well as maternal and fetal outcomes. Adjusting for baseline characteristics, multivariate logistic regression models were performed to estimate the effects of psoriasis on maternal and newborn outcomes.

RESULTS

The cohort consisted of 3737 women with psoriasis, among a total of 13,792,544 pregnancy admissions in US hospitals between the years 1999 and 2015, for a period prevalence of 27.1 cases per 100,000 pregnant women. Psoriasis was associated with preeclampsia, OR 1.4 (95% CI 1.2-1.6), gestational diabetes, 1.27 (1.13-1.42), myocardial infarction, 13.4 (3.3-54.6), chorioamnionitis, 1.3 (1.0-1.6), delivery by cesarean section, 1.2 (1.1-1.3), anemia, 1.74 (1.18-2.57), and requiring blood transfusions, 1.4 (1.0-1.8). Their newborns were at higher risk of being born preterm, 1.2 (1.1-1.4), congenital anomalies, 1.7 (1.2-2.4), and intra-uterine growth restriction, 1.5 (1.2-1.7).

CONCLUSION

Women with psoriasis and their newborns appear more prone to adverse outcomes of pregnancy. It would be prudent for these women to be followed closely during pregnancy by their obstetrical caregiver and dermatologist. Further investigation is warranted regarding the management of psoriasis during pregnancy.

State-of-the-Art Review of Pregnancy-Related Psoriasis

Psoriasis is a chronic immunologic disease involving inflammation that can target internal organs, the skin, and joints. The peak incidence occurs between the age of 30 and 40 years, which overlaps with the typical reproductive period of women. Because of comorbidities that can accompany psoriasis, including metabolic syndrome, cardiovascular involvement, and major depressive disorders, the condition is a complex one. The role of hormones during pregnancy in the lesion dynamics of psoriasis is unclear, and it is important to resolve the implications of this pathology during pregnancy are. Furthermore, treating pregnant women who have psoriasis represents a challenge as most drugs generally prescribed for this pathology are contraindicated in pregnancy because of teratogenic effects. This review covers the state of the art in psoriasis associated with pregnancy. Careful pregnancy monitoring in moderate-to-severe psoriasis vulgaris is required given the high risk of related complications in pregnancy, including pregnancy-induced hypertensive disorders, low birth weight for gestational age, and gestational diabetes. Topical corticosteroids are safe during pregnancy but effective only for localised forms of psoriasis. Monoclonal antibodies targeting cytokines specifically upregulated in psoriasis, such as ustekinumab (IL-12/23 inhibitor), secukinumab (IL-17 inhibitor) can be effective for the severe form of psoriasis during pregnancy. A multidisciplinary team must choose optimal treatment, taking into account fetal and maternal risks and benefits.

Management of Psoriasis During Preconception, Pregnancy, Postpartum, and Breastfeeding: A Consensus Statement

OBJECTIVE

To develop evidence- and experience-based recommendations for the management of psoriasis during preconception, pregnancy, postpartum, and breastfeeding.

METHODS

The nominal group technique and the Delphi method were used. Fifteen experts (12 dermatologists, 2 of whom were appointed coordinators; 1 rheumatologist; and 2 gynecologists) were selected to form an expert panel. Following a systematic review of the literature on fertility, pregnancy, postpartum, and breastfeeding in women with psoriasis, the coordinators drew up a series of preliminary recommendations for discussion by the panel at a nominal group meeting. The experts defined the scope, sections, and intended users of the statement and prepared a final list of recommendations. Consensus was obtained using a Delphi process in which an additional 51 dermatologists rated their level of agreement with each recommendation on a scale of 1 (total disagreement) to 10 (total agreement). Consensus was defined by a score of 7 or higher assigned by at least 70% of participants. Level of evidence and strength of recommendation were reported using the Oxford Center for Evidence-Based Medicine categories. The final statement was approved by the expert panel.

RESULTS

The resulting consensus statement includes 23 recommendations on preconception (fertility and contraception), pregnancy (planning, pharmacological management, and follow-up), and breastfeeding (management and follow-up). Consensus was achieved for all recommendations generated except one.

CONCLUSIONS

These recommendations for the better management of psoriasis in women of childbearing age could improve outcomes and prognosis.

Use of biologic therapies for psoriasis during pregnancy and long-term outcomes of exposed children: A 14-year real-life experience at a tertiary center in Turkey and review of the literature

Data regarding the use of biologic therapies for psoriasis during pregnancy are scarce with even more limited knowledge about the long-term safety of in utero exposure. We retrospectively evaluated nine pregnancies in six women with psoriasis who were exposed to biologic therapies between 2006 and 2019 in our psoriasis clinic, a tertiary referral center in Turkey. Pregnancy outcomes included the delivery of seven healthy babies without any complications, one elective abortion, and one ectopic pregnancy. All exposed children, aged between 14 months and 13 years (median age: 4.0 years), showed normal growth and neuropsychological development without immunodeficiencies, allergies, malignancies or other diseases. Based on up-to-date collective data in the literature and our real-life clinical experience presented here, exposure to biologic therapies during pregnancy for psoriasis does not seem to be associated with adverse pregnancy or neonatal outcomes. Our results are also reassuring with respect to long-term outcomes of exposed children, but need to be confirmed through further large prospective studies. Nevertheless, use of biologic therapies during late pregnancy, particularly during the third trimester, should be reserved for high-need patients with psoriasis and definitely requires a delicate risk/benefit balance on a case-by-case basis.

Management of Plaque Psoriasis With Biologic Therapies in Women of Child-Bearing Potential Consensus Paper

BACKGROUND

Plaque psoriasis (PsO) is a chronic inflammatory disease that often presents at peak reproductive age in women of child-bearing potential (WOCBP). With the emergence of biologic therapies to treat PsO, guidance on disease management in WOCBP is needed to inform treatment decisions before, during, and after pregnancy.

OBJECTIVES

To develop a practical, up-to-date consensus document, based on available evidence and expert opinion where evidence was lacking, in order to guide both Canadian and international clinicians treating PsO in WOCBP.

METHODS

A panel of 9 Canadian dermatologists with extensive clinical experience managing PsO reviewed the relevant literature from the past 25 years in 3 key domains: overview of PsO in WOCBP and clinical considerations, treatment considerations, and postpartum considerations. The structured literature search focused on WOCBP treated with TNF-alpha inhibitors (adalimumab, certolizumab, etanercept, golimumab, infliximab), IL-23 inhibitors (guselkumab, risankizumab, tildrakizumab), IL-12/23 inhibitors (ustekinumab), and IL-17 inhibitors (brodalumab, ixekizumab, secukinumab). This literature review, along with clinical expertise and opinion, was used to develop concise and clinically relevant consensus statements to guide practical management of PsO in WOCBP. Experts voted on the statements using a modified Delphi process and prespecified agreement cut-off of 75%.

RESULTS AND IMPLICATIONS

After review, discussion, and voting on 19 draft consensus statements at an in-person meeting and remotely, 12 consensus statements were approved by the expert panel. The statements presented here will guide healthcare providers in practical disease management using biologic therapies for the treatment of PsO in WOCBP.

Rheumatology-led pregnancy clinic: enhancing the care of women with rheumatic diseases during pregnancy

The autoimmune rheumatic diseases have a clear predilection for women. Consequently, issues regarding family planning and pregnancy are a vital component of the management of these patients. Not only does pregnancy by itself causes physiologic/immunologic changes that impact disease activity but also women living with inflammatory arthritic conditions face the additional challenges of reduced fecundity and worsened pregnancy outcomes. Many women struggle to find adequate information to guide them on pregnancy planning, lactation and early parenting in relation to their chronic condition. This article discusses the gaps in the care provided to women living with inflammatory arthritis in standard practice and how a rheumatology nurse-led pregnancy clinic would fill such gap, consequently enhance the care provided and ensure appropriate education is provided to these individuals who represent the majority of the patients attending the rheumatology outpatient clinics. Such specialist care is expected to cover the whole journey as it is expected to provide high-quality care before, during and after pregnancy.

What factors could influence physicians' management of women of childbearing age with chronic inflammatory disease? A systematic review of behavioural determinants of clinical inertia

BACKGROUND

Pregnancy represents a complex challenge to clinicians treating women with chronic inflammatory disease. Many clinicians face a situation of heightened sensitivity to the potential risks and uncertainties associated with the effect of pharmacological treatment on pregnancy outcomes. This may create an environment vulnerable to clinical inertia, whereby behavioural factors such as cognitive heuristics and biases, and other factors such as attitudes to risk and emotion can contribute. This systematic review was undertaken to assess if clinical inertia has been investigated/identified in this setting and took a behavioural science approach to identify and understand the potential determinants of clinical inertia in this treatment setting.

METHODS

A systematic literature search was conducted to identify publications which investigated or described clinical inertia or its determinants (e.g. heuristics, biases etc.). Results were coded for thematic analysis using two inter-related behavioural models: the COM-B model and the Theoretical Domains Framework.

RESULTS

Whilst studies investigating or describing clinical inertia in this treatment setting were not identified, the behavioural analysis revealed a number of barriers to the pharmacological management of women of fertile age affected by chronic inflammatory disease. Factors which may be influencing clinician's behaviour were identified in all domains of the COM-B model. The primary factors identified were a lack of knowledge of treatment guidelines and fears concerning the safety of medications for mother and fetus. Lack of experience of treating pregnant patients was also identified as a contributing factor to undertreatment.

CONCLUSION

Using a behavioural approach, it was possible to identify potential factors which may be negatively influencing clinician's behaviour in this treatment setting, although specific research was limited.

Moderate-to-severe psoriasis and pregnancy: impact on fertility, pregnancy outcome and treatment perspectives

Psoriasis affects 2-4% of the world's population, with no difference between men and women and 70% of patients experiencing disease onset before the age of 40, which coincides with the reproductive years. Few data are available from literature on impact of psoriasis on fertility, course and outcome of pregnancy and risk associated with treatments. Recent studies on other immune-mediated inflammatory diseases, among which psoriasis is also included, indicate that rheumatoid arthritis and inflammatory bowel diseases can impact female fertility and pregnancy outcomes especially during active disease episodes. In psoriasis hormonal and metabolic comorbidities, unhealthy lifestyles and systemic inflammation could also influence the ability to conceive, pregnancy course and birth outcomes. In this article we review current knowledge on reproductive function, course and outcome of pregnancy in women affected by moderate-to-severe psoriasis. Systemic treatments are also considered with a special focus on TNF-alpha blocking agents and implication of molecular structure on placental transportation and fetal exposure.

Joint American Academy of Dermatology-National Psoriasis Foundation guidelines of care for the management and treatment of psoriasis with phototherapy

Psoriasis is a chronic inflammatory disease involving multiple organ systems and affecting approximately 3.2% of the world's population. In this section of the guidelines of care for psoriasis, we will focus the discussion on ultraviolet (UV) light-based therapies, which include narrowband and broadband UVB, UVA in conjunction with photosensitizing agents, targeted UVB treatments such as with an excimer laser, and several other modalities and variations of these core phototherapies, including newer applications of pulsed dye lasers, intense pulse light, and light-emitting electrodes. We will provide an in-depth, evidence-based discussion of efficacy and safety for each treatment modality and provide recommendations and guidance for the use of these therapies alone or in conjunction with other topical and/or systemic psoriasis treatments.

Clinical considerations for the management of psoriasis in women

The burden of psoriasis is particularly high for women, who report lower levels of happiness (women: 18.5%; men: 11.3% lower vs. general population) and are more likely to experience stress (women: > 60%; men: 42%), loneliness (women: 25-28%; men: 19-24%), stigmatization (Feelings of Stigmatization Questionnaire score; women: 93.2; men: 78.0), and reduced sexual activity (women: 33%; men: 19%) compared with men. The onset of psoriasis is bimodal, with one incidence peak (15-30 years) that coincides with the prime reproductive age for women, which poses specific challenges for their treatment. However, well-established guidelines for the treatment of women of childbearing age are lacking. Many women experience stabilization (21%) or improvement (55%) of their skin during pregnancy, but up to a quarter can experience disease worsening, and postpartum flares are common (> 50%). Therefore, balancing the risk of treatment with the risk of uncontrolled disease is important. Because half of pregnancies are unplanned, the implications of therapeutic options must be considered for all women with psoriasis who are sexually active, irrespective of intentions to start a family. Timely initiation of these discussions by health care professionals is paramount to prevent unintentional toxicity to the developing fetus. For example, acitretin, methotrexate, and oral psoralen/ultraviolet A are all contraindicated in pregnancy. Reassuringly, safety data for other psoriasis treatments during pregnancy are increasingly available, particularly for anti-tumor necrosis factor therapies. Despite encouraging data from pregnancy exposure registries and clinical studies now being included in anti-tumor necrosis factor drug labels, comfort with prescribing these therapies to pregnant women remains low (U.S. dermatologists: 21%; EU-5 dermatologists: 10%). In this article, we review issues specific to treating women of childbearing age with psoriasis and highlight the need for treatment guidelines to ensure consistent care and optimal outcomes for these patients.

The Use and Safety of TNF Inhibitors during Pregnancy in Women with Psoriasis: A Review

Psoriasis is a chronic immune-mediated inflammatory disease affecting women of childbearing potential. Biologic agents, notably Tumor Necrosis Factor inhibitors (TNFi), are the only current non-contraindicated systemic treatment option during pregnancy. TNFi comprised of complete immunoglobulin G (IgG) antibodies antibodies (adalimumab, golimumab, and infliximab) actively cross the placenta from the second trimester and are detectable in the child up to one year postpartum. Data on safety of TNFi are conflicting; however a trend towards drug-specific harm has been reported, with increased risk of congenital malformations and preterm birth. TNFi exposure may alter the immune system of the infant towards hypersensitivity and reduced response to intracellular infections. Confounding by indication should be considered, as chronic inflammatory disease itself may pose a risk of adverse pregnancy outcomes. The quality of the current evidence is very low and no studies specifically address TNFi safety in women with psoriasis. Nonetheless, risks associated with TNFi treatment must be balanced against the as-yet uncertain risk of adverse outcomes in infants born to women with severe psoriasis. We searched PubMed using Medical Subject Headings (MeSH) terms and identified relevant studies and guidelines. Herein, we present the current knowledge of the use and safety of TNFi during pregnancy in women with psoriasis.

Choosing First-Line Biologic Treatment for Moderate-to-Severe Psoriasis: What Does the Evidence Say?

An advanced understanding of the pathogenesis of psoriasis has led to the development of multiple therapeutic options for moderate-to-severe psoriasis. Tumor necrosis factor inhibitors, ustekinumab, interleukin-17 inhibitors, and guselkumab (an interleukin-23 inhibitor recently approved for psoriasis) are commercially available biologic agents for psoriasis. Evidence from clinical trials provides pertinent information regarding the safety and efficacy of biologic agents for psoriasis, which should be integrated into clinical decision making. However, disease presentations, disease severity, and comorbid conditions can complicate the choice of initial treatment, which underscores the importance of providing personalized therapy for patients with psoriasis. Furthermore, each biologic agent offers unique benefits and limitations for the treatment of patients with psoriasis. Here, evidence-based recommendations are presented and discussed regarding first-line biologic therapy options for patients with psoriasis and distinct comorbid conditions or patient-related factors. We discuss the comorbid conditions of psoriatic arthritis, multiple sclerosis, congestive heart failure, inflammatory bowel disease, hepatitis B, and latent tuberculosis. Moreover, we describe treatment recommendations for distinct patient populations with psoriasis, including pediatric patients with psoriasis and patients with psoriasis of childbearing potential and nursing.

Psoriasis in those planning a family, pregnant or breast-feeding. The Australasian Psoriasis Collaboration

The Australasian Psoriasis Collaboration has reviewed the evidence for managing moderate to severe psoriasis in those who are pregnant or are breast-feeding, or planning a family. The severity of the psoriasis, associated comorbidities and specific anti-psoriasis treatment, along with other exposures, can have a deleterious effect on pregnancy outcomes. Psoriasis itself increases the risk of preterm and low birthweight babies, along with spontaneous and induced abortions, but no specific birth defects have been otherwise demonstrated. The baseline risk for a live born baby to have a major birth defect is 3%, and significant neuro-developmental problem is 5%. In Australia, pregnant women with psoriasis are more likely to be overweight or obese, depressed, or smoke in their first trimester, and are also less likely to take prenatal vitamins or supplements. Preconception counselling to improve maternal, pregnancy and baby health is therefore strongly encouraged. The topical and systemic therapies commonly used in psoriasis are each discussed separately, with regards to pregnancy exposure, breast-feeding and effects on male fertility and mutagenicity. The systemic therapies included are acitretin, adalimumab, apremilast, certolizumab, ciclosporin, etanercept, infliximab, ixekizumab, methotrexate, NBUVB, prednisone, PUVA, secukinumab and ustekinumab. The topical therapies include dithranol (anthralin), calcipotriol, coal tar, corticosteroids (weak, potent and super-potent), moisturisers, salicylic acid, tacrolimus, and tazarotene. As a general recommendation, effective drugs that have been widely used for years are preferable to newer alternatives with less foetal safety data. It is equally important to evaluate the risks of not treating, as severe untreated disease may negatively impact both mother and the foetus.

Update on biologic safety for patients with psoriasis during pregnancy

Biologic agents have become more common to treat patients with psoriasis, but concerns about their effect on pregnancy and lactation often preclude this treatment during these time periods. During the past decade, we have gained a much better understanding of the course of psoriasis during pregnancy and the safety of the use of biologic agents during pregnancy and lactation. Under certain circumstances, biologic agents can be considered appropriate treatment options for patients who are pregnant or lactating.

Managing Patients With Psoriasis in the Busy Clinic: Practical Tips for Health Care Practitioners

Psoriasis is a common inflammatory disease with significant comorbidities, whose management can be challenging given the variety of treatment options. It is critical for nurse practitioners, physician assistants, general practitioners, and dermatology trainees to have useful information about the treatment and monitoring of patients with psoriasis. Although certain aspects of care apply to all patients, each therapeutic agent has its own nuances in terms of assessments, dosing, and monitoring. The most appropriate treatment is based not only on disease severity but also on comorbid conditions and concomitant medications. These practitioners are vital in facilitating patient care by thorough understanding of systemic agents, selection criteria, dosing, and recommended monitoring. This article provides high-yield practical pearls on managing patients with moderate to severe psoriasis. It includes case-based discussions illustrating considerations for special populations, such as pregnant women, children, and patients with comorbidities (eg, human immunodeficiency virus infection, hepatitis C, hepatitis B, and history of malignancy).

Dermatologic therapy in pregnancy

Patients present during pregnancy with a variety of dermatologic conditions, most of which can be treated conservatively with topical medication by a primary obstetrician if he or she is familiar with common treatment options. Patients with moderate to severe forms of dermatologic disease or those requiring systemic therapy should be treated in consultation with a dermatologist. Dermatologic surgery can be performed safely in the second trimester using local anesthesia if needed.

Pregnancy and dermatologic therapy

Dermatologists should be familiar with medication safety in pregnancy to be able to prescribe safely and confidently to pregnant women or women who may become pregnant during the course of treatment for dermatologic conditions. Topical medications should be considered first-line therapy for pregnant women, but certain systemic medications are safe to use in pregnancy and may be prescribed if necessary. Dermatologic surgery may be performed during the second trimester of pregnancy with proper positioning, but elective procedures should be delayed until the postpartum period.

[Chronic inflammatory and autoimmune mediated dermatoses during pregnancy. Course and prognosis for mother and child]

Chronic inflammatory dermatoses during pregnancy can take varying courses in mother and child. The dominant Th2-response characteristic for pregnancy may explain why atopic eczema or lupus erythematosus may deteriorate while psoriasis vulgaris may improve. In contrast, impetigo herpetiformis frequently shows a severe course. Lupus erythematosus and other autoantibody-triggered dermatoses like pemphigus vulgaris pose an increased risk for the child because of placental transfer of autoantibodies with specific skin changes or systemic manifestations of the disease as well as placental insufficiency, growth retardation and premature birth. Such risks are not associated with linear IgA dermatosis. A severe pityriasis rosea during the first 20 weeks of pregnancy may lead to an increased risk of abortion or premature delivery. Early diagnosis and individually adjusted therapy of skin diseases is mandatory to avoid any risk for mother or child.

Early-stage mycosis fungoides, parapsoriasis en plaque, and pregnancy

BACKGROUND

Non-Hodgkin's lymphoma (NHL) coincident with pregnancy is rare, and the literature regarding mycosis fungoides (MF), the most common primary cutaneous NHL, and pregnancy is strikingly sparse. The effect of pregnancy on MF, or on parapsoriasis en plaque (PPP), and the effect of these diseases on pregnancy, are still unknown.

OBJECTIVE

To study the effect of pregnancy on MF and PPP and the impact of these diseases on pregnancy.

METHODS

The files of the MF and PPP patients seen during the past 12 years in our department were reviewed to search for patients who had been pregnant during the course of their disease.

RESULTS

Nine women who met the study criteria were identified, seven with early-stage MF and two with PPP. A total of 12 pregnancies was recorded: nine in patients with MF and three in patients with PPP. In none of the patients was there any indication that pregnancy changed the course of MF or PPP. Of the 12 pregnancies, 11 were normal; one was naturally aborted. Two of the patients were treated with topical steroids during pregnancy. One patient was treated with narrow-band ultraviolet-B combined with topical steroids. The rest preferred to avoid any therapy.

CONCLUSIONS

Pregnancy appeared to have no impact on the course of early MF or PPP, and no adverse effect was noted on pregnancy. Further studies are needed to clarify the interplay between pregnancy and MF or PPP.

Corticosteroids, pregnancy, and HELLP syndrome: a review

Corticosteroids are potent antiinflammatory and immunosuppressive drugs, which are used in the treatment of a wide range of medical disorders. During pregnancy, several corticosteroids are administered for maternal as well as fetal reasons. Prednisone and prednisolone show limited transplacental passage and are thus used for treatment of maternal disease. Dexamethasone and betamethasone, drugs that can easily cross the placenta, are more suitable for fetal indications. During the last decade, administration of corticosteroids was introduced in the treatment of hemolysis, elevated liver enzymes, and low platelets (HELLP syndrome), a severe form of preeclampsia unique to human pregnancy. Several randomized, controlled trials as well as other prospective and retrospective studies have been performed to investigate this beneficial effect of corticosteroids on biochemical measures and clinical signs. This review discusses the characteristics of corticosteroids in humans and details the use of corticosteroids during pregnancy. A review of literature on the effect of corticosteroids on HELLP syndrome is given and possible mechanisms of action are discussed.

[Pruritus in pregnancy. A frequent diagnostic and therapeutic challenge]

Pruritus is the leading dermatological symptom during pregnancy. Besides preexisting or acquired dermatoses, there are a number of pregnancy-specific dermatological diseases such as PEP (polymorphic eruption of pregnancy, previously named PUPPP), pemphigoid (herpes) gestationis, and pruritus gravidarum that are accompanied by severe itching and scratching. Because of potential effects on the fetus, the treatment of pruritus in pregnancy requires prudent consideration. The use of topical and systemic treatments depends on the underlying aetiology of pruritus and the stage and status of the skin. In general, emollients, topical anti-pruritics and topical corticosteroids appear to be the safest options for localised forms of pruritus in pregnancy whereas systemic treatments and/or UV phototherapy are adequate for generalized pruritus. Systemic corticosteroids and a restricted number of antihistamines may be administered in severe cases. This paper highlights the major aetiologies of pruritus during pregnancy and points out the cornerstones of antipruritic therapy in recognition of our own clinical experiences and the current literature.