The overlap syndrome of urticaria and gastroesophageal reflux disease

The prevalence of gastrointestinal symptoms and cobalamin deficiency in patients with chronic urticaria

BACKGROUND

There is a paucity of studies reporting the presence of systemic symptoms and micronutrient deficiency in patients with chronic urticaria, and these data are lacking in a Canadian population.

OBJECTIVE

To report the prevalence of gastrointestinal symptoms and vitamin B12 (cobalamin) deficiency in a Canadian patient population diagnosed with chronic urticaria.

METHODS

A retrospective chart review of 100 adult patients with chronic urticaria was conducted. Demographic characteristics, medications, presence of gastrointestinal symptoms, and laboratory findings were abstracted from electronic medical records.

RESULTS

Seventy percent of patients with chronic urticaria reported experiencing gastrointestinal symptoms. The most common symptom identified was gastroesophageal reflux (42%). Vitamin B12 (cobalamin) deficiency, defined as serum vitamin B12 level ≤ 250 pmol/L, was identified in 31.7% of the patients. Among those patients with urticaria and vitamin B12, 68% reported gastrointestinal symptoms.

CONCLUSIONS

This is the first study to provide data on the high prevalence of gastrointestinal symptoms and vitamin B12 (cobalamin) deficiency in a Canadian population diagnosed with chronic urticaria. Early recognition and management of systemic symptoms and micronutrient deficiency may lead to a more comprehensive approach to management of these patients. Trial registration Not applicable.

Prevalence, Clinical Manifestations, Treatment, and Clinical Course of Chronic Urticaria in Elderly: A Systematic Review

Purpose

Data specific to the epidemiology, clinical features, and management of chronic urticaria (CU) in the geriatric population remain limited and not well understood. We aim to systematically review the prevalence, clinical manifestations, treatment, and clinical course of elderly patients with CU.

Patients and methods

Original articles that included data of elderly (aged >60 years) with CU that were published until February 2021 were searched in PubMed, Scopus, and Embase using predfefined search terms. Related articles were evaluated according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses recommendations.

Results

Among the included 85 studies and 1,112,066 elderly CU patients, most (57.4%) were women. The prevalence of elderly CU in the general population ranged from 0.2–2.8%, and from 0.7–33.3% among all CU patients. Compared to adult CU, elderly CU patients had a higher percentage of wheal alone (73.9%), and lower rate of positive autologous serum skin test and atopy. Gastrointestinal diseases were the most common comorbidity (71.9%), and there was a high rate of malignancies and autoimmune diseases. Second generation H₁-antihistamines were commonly used, and achievement of complete control was most often reported. Omalizumab was prescribed in 59 refractory patients, and a significant response to treatment was reported in most patients. The treatment of comorbidities also yielded significant improvement in CU.

Conclusion

Elderly CU was found to be different from adult CU in both clinical and laboratory aspects. H₁- antihistamines are effective as first-line therapy with minimal side-effects at licensed doses. Treatment of secondary causes is important since the elderly usually have age-related comorbidities.

Acupuncture for gastrointestinal urticaria: A protocol for systematic review and network meta-analysis

Introduction

The purpose of this review is to evaluate the effectiveness and safety of acupuncture in the treatment of patients with gastrointestinal urticaria (GU) and to provide a clinician's guide to GU treatment options.

Methods and analysis

We plan to search multiple databases (i.e., PubMed, EMBASE, Springer, Web of Science, Cochrane Library, China National Knowledge Infrastructure, Chinese Biomedical Literature Database and Wanfang Database) for studies published before September 1, 2022. We will electronically search for all relevant studies concerning clinical acupuncture treatments of GU, including unpublished conference articles and other gray literature. The language limit of this systematic review is Chinese and English. Any reports of clinical randomized controlled trials of acupuncture for the treatment of GU will be included in the study. Two researchers will perform independent data extraction to increase the quality of the data extraction. The primary outcome was the Urticaria Activity Score 7 (UAS7). Abdominal visual analog scale (VAS) for abdominal pain, dermatological life quality index (DLQI), the total effective rate, recurrence rate, and occurrence of adverse events were secondary outcomes. We will use RevMan V.5.3 statistical software for pairwise meta-analysis and ADDIS V.1.16.8 software for Bayesian network meta-analysis. If feasible, meta-regression and subgroup analyses will also be performed to address the potential causes of inconsistency and heterogeneity. We will conduct a GRADE assessment of the quality of evidence for the interventions included in this review.

Discussion

This study may validate acupuncture as an alternative therapy for the effective treatment of GU.

Trial registration number

PROSPERO CRD42022333977.

Consecutive Severe Orofacial Complications in Intensive Care Unit Patients: Quincke's Disease and Macroglossia due to Prolonged Prone Positioning for Management of Acute Respiratory Distress Syndrome

Critically ill patients admitted into the intensive care units are susceptible to a wide array of complications that can be life-threatening, or lead to long-term complications. Some complications are inherent to the patient's condition and others are related to therapeutics or care procedure. The prolonged prone positioning and mechanical ventilation devices are the first risk factors for orofacial complications. We report the case of a 47-year-old male patient, with a history of sleep apnoea syndrome, morbid obesity (body mass index of 43 kg/m2), and gastroesophageal reflux disease, presented to the emergency department with recent otorhinolaryngological symptoms of dysphonia and exertional dyspnoea lasting two days, and complicated with Quincke's disease. First-line treatment consisted of a compilation of intravenous antihistamines and corticosteroids. The patient's condition worsened. He developed an acute respiratory distress syndrome secondary to ventilator-acquired pneumonia with prone positioning ventilation, complicated by severe macroglossia. Soaked gauze dressings were placed around his tongue. Progressively, the size of his tongue reduced.

LEARNING POINTS

Intensive care unit (ICU) patients are susceptible to a wide array of life-threatening complications that can be linked.Oral severe acquired Quincke's disease is an isolated form of angioneurotic oedema that is induced by several factors including gastroesophageal reflux disease, sleep apnoea, inhalation exposure, or drug reactions. Macroglossia is rare life-threatening complication due to prolonged prone positioning of unknown pathogenesis. An experienced critical care staff with standardised protocol is needed to prevent such a complication.Because of possible consecutive severe orofacial complications, prolonged prone positioning for management of acute respiratory distress syndrome (ARDS) is not recommended in patients with inaugural oral angioedema.

Irritable bowel syndrome is strongly associated with the primary and idiopathic mast cell disorders

BACKGROUND

Mounting evidence supports a mechanistic association between irritable bowel syndrome (IBS) symptoms and mast cell hyperactivity. Yet, association between IBS and mast cell disorders (MCDs) has not been studied. We examined this association using two large databases and verified with manual chart review.

METHODS

The IBM Watson Health Explorys database (Somers, NY), an aggregate of electronic health record (EHR) data from over two dozen US healthcare systems, and Epic's SlicerDicer tool, a self-service tool containing de-identified data from the Epic EHR, were used to identify patients with IBS and MCDs. Patients with organic gastrointestinal disease or diseases associated with secondary mast cell hyperproliferation were excluded. Results were verified with manual chart review from two academic centers.

KEY RESULTS

Up to 4% of IBS patients had a comorbid MCD. IBS was strongly associated with all MCDs. The strongest association was between IBS and mast cell activation syndrome (OR 16.3; 95% CI 13.1-20.3). Odds ratios for IBS+urticaria, IBS+idiopathic urticaria, IBS+non-malignant mastocytosis, and IBS+mast cell malignancy ranged from 4.5 to 9.9. Patients from each of these overlap cohorts were predominantly female, and the overlap occurred with all IBS subtypes. Thorough endoscopic evaluation and comorbid mood disorders and migraines are more common in the overlap cohorts than in IBS alone.

CONCLUSIONS/INFERENCES

In a large US database encompassing >53 million patients over >20 years, patients with IBS are at least 4 times more likely to have a MCD than the general population. Further study of mast cell involvement in the pathogenesis of IBS is warranted.

Total IgE as a Marker for Chronic Spontaneous Urticaria

OBJECTIVE

Immunoglobulin E (IgE) and its receptor, FcɛRI, importantly contribute to the pathophysiology of chronic spontaneous urticaria (CSU). Recent findings point to a possible role of total IgE as a marker of CSU disease activity, endotypes, and responses to treatment. The evidence in support of total IgE included in the diagnostic workup of patients with CSU has not yet been reviewed.

METHODS

Publications were searched via PubMed. The search terms used were "chronic urticaria" and "total IgE." Studies were screened by titles and abstracts, and 141 were used in the review.

RESULTS

CSU patients frequently had elevated total IgE serum levels (up to 50%), but normal or very low total IgE levels also occurred. High total IgE may represent high disease activity, longer disease duration, high chance of responding to omalizumab treatment, quick relapse after stopping omalizumab, and lower chance of responding to cyclosporine. Low IgE, in contrast, may suggest Type IIb autoimmune CSU, poor response to treatment with omalizumab and a better chance to benefits from cyclosporine treatment. Furthermore, IgE in different CSU cohorts may have different physicochemical properties that could explain differences in treatment responses to IgE-directed therapies.

CONCLUSION

The results of our review suggest that total IgE is a valuable marker for CSU, and we recommend its assessment in the routine diagnostic workup of CSU patients.

Presence of positive skin prick tests to inhalant allergens and markers of T2 inflammation in subjects with chronic spontaneous urticaria (CSU): a systematic literature review

BACKGROUND

Current guidelines do not recommend performing aeroallergen skin prick testing (SPT) in chronic spontaneous urticaria (CSU).

OBJECTIVE

The objective of this review was to investigate the presence of aeroallergen sensitization and markers of T2 inflammation in subjects with CSU.

METHODS

Systematic literature reviews to identify all studies that evaluated the presence of T2 markers of allergic inflammation in CSU subjects were performed.

RESULTS

In 16 studies that assessed the prevalence of positive SPT to multiple aeroallergens in CSU, 38.5% of CSU subjects had positive SPT. In three controlled studies, 34.2% of CSU subjects had positive SPT to multiple aeroallergens, compared to 13.6% of controls (p = 0.047). In 18 studies that assessed the prevalence of house dust mite (HDM) positive SPT in CSU, 27.5% of CSU subjects had positive SPT. In three controlled studies, 27.5% of CSU subjects had positive SPT to HDM, compared to 2.1% of controls (p = 0.047). Overall, CSU subjects were 3.1 times more likely to be aeroallergen-sensitized (95% CI 1.7-5.8, p = 0.0002) and 6.1 times more likely to be HDM-sensitized (95% CI 3.7-9.9, p < 0.00001) than controls. Mean total serum IgE (tIgE) levels were 238 kU/L and median tIgE levels were 164 kU/L, which was greater than the upper 90th percentile of normal (< 137 kU/L). Compared to healthy controls, CSU subjects were 6.5 times more likely to have IgG autoantibody against FcεR1α (p = 0.001), 2.4 times more likely to have IgG anti-IgE antibody (p = 0.03) and 5 times more likely to have anti-thyroid peroxidase (anti-TPO) antibody (p = 0.02). When corticosteroids were withheld for ≥ 28 days, mean blood eosinophil percentage was elevated at 5.9% (normal < 4%), but other studies reporting absolute count found the mean was in the normal range, 239 × 10 6 / L (normal < 400 × 10 6 / L).

CONCLUSION

Increased aeroallergen sensitization, tIgE, autoantibodies and blood eosinophil percentage in the CSU subjects indicates the possible importance of T2 inflammation in the pathogenesis of CSU. Further studies may be warranted to determine if specific allergen avoidance, desensitization or improvement in the mucosal allergic inflammation present in asthma and/or rhinitis has any benefit in the management of CSU.