Skin Hyperpigmentation - Differential Diagnosis Algorithm Diffuse: • Tanning • Adverse cutaneous drug eruption • Addison's disease • Hemochromatosis • Porphyria cutanea tarda Congenital: • Café au lait macules (neurofibromatosis or McCune Albright syndrome) • Congenital melanocytic nevi Acquired: • Freckles (ephelides) • Lentigines • Melasma • Tinea versicolor (more commonly hypopigmented) • Post-Inflammatory hyperpigmentation #Hyperpigmentation #disorders #skin #dermatology #Differential #Diagnosis #Algorithm #causes
