Clubbing

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Clubbing is a condition in which the ends of the fingers and toes swell and the nails bulge outward. The nails wrap around the fingers or toes and look raised, curved, and shiny.

Clubbing may happen in children with congenital heart disease and people with chronic heart, lung, liver, or thyroid disease. But simple hereditary clubbing can occur without heart or lung problems.

The Health Encyclopedia contains general health information. Not all treatments or services described are covered benefits for Kaiser Permanente members or offered as services by Kaiser Permanente. For a list of covered benefits, please refer to your Evidence of Coverage or Summary Plan Description. For recommended treatments, please consult with your health care provider.