Beliefs About Medicines in Patients with Psoriasis Treated with Methotrexate or Biologics: A Cross-sectional Survey Study
SourceActa Dermato-Venereologica, 99, 4, (2019), pp. 386-392
Article / Letter to editor
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SubjectRadboudumc 5: Inflammatory diseases RIHS: Radboud Institute for Health Sciences
Methotrexate (MTX) and biologics are frequently used treatments for psoriasis. Exploring patients' beliefs about their treatment may help to elucidate patients' attitudes towards these therapies. A cross-sectional survey was conducted using the Beliefs about Medicines Questionnaire-Specific (BMQ-Specific) in patients treated with methotrexate or biologics. BMQ-Specific scores (Necessity and Concerns scales) were calculated and patients were classified as "accepting", "indifferent", "ambivalent" or "sceptical" towards their treat-ment. Biologics users scored higher on the Necessity scale than did methotrexate users. Both groups had lower Concerns scores than Necessity scores. A high Necessity scale was associated with a low Psoriasis Area and Severity Index score in both groups and long treatment duration in the methotrexate group. Although this study cannot make a direct comparison, it was observed that most patients on biologics could be classified as "accepting" (59%), and most patients on MTX could be classified as "indifferent" (47%). In conclusion, the BMQ-Specific is useful to identify patients with a sceptical, ambivalent or indifferent profile. These profiles may negatively influence patient's attitude towards their medication.
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