Nail disease can affect the health, strength, and appearance of fingernails and toenails. The following are some common nail conditions, causes, symptoms, and how to treat them. People living with ...

According to the National Psoriasis Foundation, approximately 50% of people with psoriasis will also have nail psoriasis. Nail psoriasis can affect a person’s fingernails or toenails. Nail psoriasis ...

A small black line that forms vertically underneath your nail may be a splinter hemorrhage, while horizontal lines may be melanonychia. These may be harmless or a sign of a more serious health ...