[Chronic Pain in People Impaired by Thalidomide Embryopathy: An Explorative Analysis of Prevalence, Pain Parameters and Biopsychosocial Factors].

OBJECTIVE The aim of the study was to show the frequency, localisation, intensity, quality and degree of chronic pain in people with thalidomide-induced congenital defects (thalidomide embryopathy) and to investigate the association with biopsychosocial factors more closely. METHODS A group of 202 people from North Rhine-Westphalia with thalidomide embryopathy were studied for the first time both physically for the pattern of the original damage and also psychiatrically in a structured diagnostic interview (SCID I & SCID II). The results were combined with a standardized pain interview (MPSS) and questionnaires on further pain-related (SF-36, painDETECT) and sociodemographic variables and analysed. In the analysis 167 completed datasets were included. RESULTS The prevalence of pain in the sample population was 94%. The majority (107, 54.0%) already showed an advanced stage of chronicity in the MPSS: 63 subjects with Stage II (37.7%) and 44 with Stage III (26.3%). In 74 subjects (44.3%) the PainDetect score showed a possible or neuropathic pain component. The factors that most reliably influenced the chronicity of pain proved to be hip pain (p<0.001) and also mental health disorders (p=0.001), above major depression (p<0.001) and also somatic symptom disorders and substance-related disorders (p=0.001 in each case). Social variables proved non-significant here (p=0.094 for living alone, p=0.122 for unemployment, p=0.167 for lack of college education), as did the care situation (p=0.191 for care dependency) and the underlying pattern of organ damage (p=0.229 for damage to hearing, p=0.764 for dysmelia). CONCLUSIONS People with thalidomide defects frequently suffer from a separate pain disorder which can be seen as secondary thalidomide-induced damage and which requires specialized and personalized multimodal pain management.