Background: 60-90% of patients with psoriasis suffer from pruritus and 65% report itching as one of the most burdensome symptoms, raising significant quality of life (QoL) impairments. However, pruritus is not only an intrapersonal symptom but also a psychosocial interactive phenomenon and little is known about the effects of itching on interpersonal experiences.
Objectives: This study aimed to compare the disease burden and patient needs between patients with none/mild vs. moderate/severe pruritus, and to examine the impact of disease parameters and intrapersonal burden on perceived stigmatization and sexual relationships.
Methods: This cross-sectional study included German patients aged ≥ 18 years with psoriasis vulgaris. Disease severity was assessed with Psoriasis Area and Severity Index; patients reported on intensity of pruritus, skin-generic and pruritus-specific QoL, patient needs and benefits, anxiety and depression symptoms, dysmorphic concerns, perceived stigmatization and sexual dysfunction.
Results: A total of 107 patients with psoriasis participated (mean age = 46.3 ± 14.6 years; 52.3% male): 64 with none/mild pruritus (NRS ≤ 3) and 43 with moderate/severe pruritus (NRS ≥ 4). Patients with moderate/severe pruritus reported more QoL impairments, depression and anxiety symptoms and dysmorphic concerns, but less treatment benefits, than those with none/mild pruritus. The patient needs most frequently rated as 'very/quite important' were 'be healed of all skin defects' (88.8%), and 'be free of itching' (87.0%), with no differences between the groups. Younger age, disease severity, frequency of scratching behaviours, dysmorphic concerns and treatment benefits were positively associated with stigmatization experiences; disease severity, sleeping problems and skin-generic QoL impairments were positively associated with sexual dysfunction.
Conclusions: Pruritus induces significant burden in patients with psoriasis. Along with disease severity, intrapersonal burden has a great impact on social and dyadic relationships. Treatment choices that are effective in reducing pruritus should be prioritized in patient-centred healthcare.
© 2021 The Authors. Journal of the European Academy of Dermatology and Venereology published by John Wiley & Sons Ltd on behalf of European Academy of Dermatology and Venereology.