Patients with psoriasis have a genetic predisposition for the disease. Evidence suggests that psoriasis is an autoimmune disease. Many factors besides stress have also been observed to trigger exacerbations, including cold, trauma, infections (eg, streptococcal, staphylococcal, HIV), and alcohol. Certain drugs can induce or exacerbate psoriasis. These drugs include beta-blockers (eg, metoprolol), interferons, lithium, imiquimod, terbinafine, oral corticosteroids, and antimalarial drugs (eg, hydroxychloroquine). Hot weather, sunlight, and (in some cases) pregnancy may be beneficial. Methotrexate is used to treat psoriasis.
Read more on the etiology of psoriasis.
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Cite this: William James. Fast Five Quiz: Psoriasis - Medscape - Nov 08, 2021.