A look at a black line on the nail, a common change that can happen due to a range of causes. Included is detail on the diagnosis and when to see a doctor.

A look at hyperkeratosis, a condition where the skin becomes thicker than normal. Included is detail on types of hyperkeratosis and when to see a doctor.

Panniculitis causes large, tender bumps to form under the skin. They usually occur on the lower legs but can affect other parts of the body.

A look at alopecia universalis, a condition resulting in hair loss across the entire body. Included is detail on diagnosis and the relationship to stress.

Traction alopecia is hair loss caused by tight hairstyles. Caught early, it is fully reversible and the hair can regrow. Learn more about treatment.

This article looks at skin conditions that are related to ulcerative colitis, including psoriasis, vitiligo, and hives. Learn about causes and prevention.

Fitzpatrick skin typing is a way of classifying different types of skin. What does a person's Fitzpatrick skin type tell us about their skin?

A look a petechiae, small non-raised hemorrhages that appear on the skin. Included is detail on what they look like and when to see a doctor.

Palmar erythema is a rare condition that makes the palms of the hands turn red. Learn about the causes, including pregnancy and liver cirrhosis.

There are a number of treatments and home remedies that may help reduce the appearance of the scars and improve the look and feel of the skin.