A black line on your nail (medically known as melanonychia) causes a streak of dark pigmentation that runs along the nail bed. It can be a normal color variation, especially in people with darker skin ...

Medically reviewed by Susan Bard, MD Key Takeaways A black line on the nail could be a sign of melanonychia or splinter hemorrhage.Melanonychia can be caused by medications like antiretrovirals, ...

This summer, Charmaine Sherlock noticed a thin black line under her nail of her left thumb — what looked like a splinter growing from her cuticle. She thought perhaps she was having an autoimmune ...

The cause of your nails changing texture or shape may not always be a cause for concern.  Fingernails and toenails often ...

Drug-induced nail disorders are uncommon adverse reactions that can occur as a result of drugs, with nail abnormalities being due to acute damage to the nail unit leading to symptoms associated with ...

Some reasons are common and can be treated at home, such as an injury. But there may be more serious reasons for fingernail pain that require medical treatment. Share on Pinterest Getty Images There ...

The appearance and condition of your nails can actually be a reflection of the health of your internal organs.

Your fingernails might seem like simple protective coverings for your fingertips, but they’re actually sophisticated diagnostic tools that can reveal crucial information about your protein intake.