Nail disorders, miscellaneous

DDx

Nail pitting: psoriasis, alopecia areata, hand eczema
Beau's lines (transverse) after serious illness
Longitudinal groove: genetic or trauma
Nail atrophy: congenital, trauma, vascular or neuralgic disease
Spoon nails: anemia
Nail hyperpigmentation: zidovudine, doxorubicin, cyclophosphamide, bleomycin, daunorubicin, fluorouracil, hydroxyurea, melphalan, mechlorethamine, nitrosoureas

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