Nail Diseases

Chromonychia is the presence of abnormal nail color. The natural nail plate is translucent and derives its apparent color from the underlyin...

In brachyonychia, or short nails, the longitudinal dimension of the nail is shorter than normal, giving the fingernail an unusually broad ap...

Beau’s lines are horizontal grooves in the nail plate that represent an arrest or slow-down in the growth of the nail matrix. A severe medic...

Anonychia is the absence of nail. It can occur as the end result of scarring (onychatrophy) (Figure 4) and in congenital disorders, often wh...

When history and clinical features alone do not yield a diagnosis, a biopsy of the nail should be considered. The location of the nail biops...