Prevalence, types and associations of medically unexplained symptoms and signs. A cross-sectional study of 1023 adults with intellectual disabilities

Research priorities for medically not yet explained symptoms expressed by patients, carers, and healthcare professionals in the Netherlands following the James Lind Alliance priority setting partnership approach

OBJECTIVE

Experiencing physical symptoms that are medically not yet explained (MNYES) is associated with considerable burden in daily life. Research priorities in this area have been primarily investigator-driven. The present study identifies the top 10 research priorities, incorporating the views of patients, carers and healthcare professionals.

METHODS

This study used the Priority Setting Partnership approach in collaboration with the James Lind Alliance (JLA). The priority setting approach combines survey-based data from patients with a specific disorder/condition and relevant stakeholders (i.e., caregivers and healthcare professionals) with input from group meetings and a final priority setting consensus meeting. There were three consecutive phases: (1) online survey with an open-ended question to collect topics for future scientific research (N = 345 participants); (2) an online survey among stakeholders to prioritise the research questions generated in Phase 1 (N = 400); and (3) a final multi-stakeholder consensus meeting, held over two half-days to determine the final top 10 research priorities for the Netherlands (day 1 N = 25, day 2 N = 24).

RESULTS

Phase 1 resulted in 572 topics, which were reduced to 37 summary research questions. Phase 2 resulted in 18 research priorities, that were ranked and the top 10 priorities were established during the final consensus meeting. The top 10 research priorities included three main themes: optimising efficient diagnosis and treatment, aetiology and prevention, and coping with MNYES.

CONCLUSION

The top 10 priorities provide insight into what is most important for future research into MNYES from the perspective of patients, carers and healthcare professionals.

Altered Interoceptive Awareness in High Habitual Symptom Reporters and Patients With Somatoform Disorders

Objective: Altered interoception may play a major role in the etiology of medically unexplained symptoms (MUS). It remains unclear, however, if these alterations concern noticing of signals or if they are limited to the interpretation of signals. We investigated whether individuals with MUS differ in interoceptive awareness as assessed with the Multidimensional Assessment of Interoceptive Awareness (MAIA) questionnaire.

Methods: Study 1: A total of 486 individuals completed the Screening for Somatoform Disorders (SOMS-2). Thirty-two individuals each of the upper and lower decile of the SOMS distribution (low symptom reporters/LSR, high symptom reporters/HSR) completed the MAIA. Study 2: MAIA scores of individuals diagnosed with somatoform disorder (SFD; n = 26) were compared to individuals with major depressive disorder (MDD; n = 25) and healthy controls (HC; n = 26).

Results: HSR had lower scores than LSR on the MAIA scales Not-Distracting and Not-Worrying. The SFD and MDD groups showed lower scores than HC on the MAIA scales Not-Distracting, Self-Regulation, and Trusting. The MDD group scored lower than the other two groups on the scales Body Listening and Attention Regulation. There were no group differences on the scale Noticing.

Conclusion: HSR, SFD, and MDD patients do not differ from HC in the awareness of noticing of interoceptive signal processing, whereas cognitive facets of interoception, such as distraction or self-regulation are differentially affected. This highlights the necessity of including specifically targeted interventions, which improve interoceptive awareness, in the prevention and treatment of SFDs.

Suckling, Feeding, and Swallowing: Behaviors, Circuits, and Targets for Neurodevelopmental Pathology

All mammals must suckle and swallow at birth, and subsequently chew and swallow solid foods, for optimal growth and health. These initially innate behaviors depend critically upon coordinated development of the mouth, tongue, pharynx, and larynx as well as the cranial nerves that control these structures. Disrupted suckling, feeding, and swallowing from birth onward-perinatal dysphagia-is often associated with several neurodevelopmental disorders that subsequently alter complex behaviors. Apparently, a broad range of neurodevelopmental pathologic mechanisms also target oropharyngeal and cranial nerve differentiation. These aberrant mechanisms, including altered patterning, progenitor specification, and neurite growth, prefigure dysphagia and may then compromise circuits for additional behavioral capacities. Thus, perinatal dysphagia may be an early indicator of disrupted genetic and developmental programs that compromise neural circuits and yield a broad range of behavioral deficits in neurodevelopmental disorders.

Smoking and its association with cryptorchidism in Down syndrome

INTRODUCTION

Cryptorchidism is a common and prevalent condition in patients with Down syndrome. Environmental factors, such as smoking, can be associated with malformations during fetal development. The study of the prevalence of cryptorchidism and its association with parental tobacco use in Down syndrome can contribute to alert health care professionals, patients and family members regarding the prevention of the harms caused by cryptorchidism and its possible predisposing factors.

OBJECTIVE

To evaluate the prevalence of cryptorchidism in Down syndrome and its association with maternal and paternal smoking.

METHOD

Forty (40) patients of a public clinic specialized in Down syndrome were evaluated, using a semi-structured questionnaire for evaluation of antecedents and sociodemographic characteristics, as well as physical and complementary examinations.

RESULTS

Cryptorchidism was observed in 27.5% of the patients (95CI 15.98-42.96). Of these, 55% (5/9) were the children of mothers who smoked during pregnancy, and 19.35% (6/31) were the children of mothers who did not smoke during pregnancy (OR = 5.26 [95CI 1.06-25.41]; p=0.032). Similarly, paternal smoking was also observed in greater frequency among the parents of cryptorchid patients compared with subjects with descended testis, 63.36% (7/11) and 31.03% (9/29), respectively (OR = 3.89 [95CI 0.91-16.73]; p=0.060).

CONCLUSION

The prevalence of cryptorchidism is high in patients with Down syndrome. We can show a strong association between smoking parents and the occurrence of cryptorchidism, especially when it comes to maternal smoking.