Fingertip dermatitis refractory to topical corticosteroids associated with nail-patella syndrome.

A 14-year-old girl and her 47-year-old father presented with fingernails that were hypoplastic, spoon-shaped and ridged since birth. Fingertip dermatitis and paronychia were also observed in the daughter, which had been present since birth and had progressively worsened. The daughter denied trauma to her fingernails or chronic exposure to irritants and allergens. She had previously tried topical corticosteroids for 18 months without any benefit. We put forward the possibility of chronic paronychia and fingertip dermatitis, refractory to topical corticosteroids, as associations of digital nail-patella syndrome.