This document provides information on various dermatological conditions including: - Pityriasis versicolor, describing presentation, diagnosis via KOH mount, and treatment with selenium sulfide or ketoconazole. - Acne vulgaris, outlining exacerbating factors to avoid and medical management approaches for moderate and severe cases including topical and oral medications. Details are given on isotretinoin use and monitoring. - Rosacea, defining diagnostic criteria and stages, differential diagnosis, and treatment approaches including lifestyle modifications and topical or oral antibiotics. - Vitiligo, alopecia areata, scabies, lichen planus, and psoriasis, briefly covering presentation, diagnosis