How Scalp Trichoscopy Aids in the Diagnosis of Psoriasis in the Setting of Psoriatic Arthritis: Case Report

Cases in which patients with PsA have even mild cutaneous psoriatic lesions are common, making the diagnosis easier. The 2 cases described above highlight the role of trichoscopy and emphasize the importance of collaboration between dermatologists and rheumatologists. When rheumatologists investigate possible causes of arthritis and consider PsA as a differential diagnosis, referring the patient to a dermatologist is important. On the other hand, in cases of scalp psoriasis, if arthropathy is present, the patient should consult a rheumatologist to determine whether joint involvement is caused by another rheumatologic condition. In clinical practice, scalp psoriasis is frequently observed as an independent condition, and its presence does not exclude the possibility of other coexisting pathologies.