MSD Manual

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Clubbing

By

Rebecca Dezube

, MD, MHS, Johns Hopkins University

Last full review/revision Feb 2020| Content last modified Feb 2020
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Topic Resources

Clubbing is enlargement of the tips of the fingers or toes and a change in the angle where the nails emerge.

Clubbing occurs when the amount of soft tissue beneath the nail beds increases. It is not clear why the soft tissue increases, but it may be related to the levels of proteins that stimulate blood vessel growth. Clubbing occurs in some lung disorders (such as lung cancer, lung abscess, pulmonary fibrosis, and bronchiectasis) but not in others (pneumonia and asthma). Clubbing also occurs in some congenital heart disorders and liver disorders. In some cases, clubbing may be inherited and not indicate any disorder. Clubbing itself does not need treatment.

Recognizing Finger Clubbing

Finger clubbing is characterized by enlarged fingertips and a loss of the normal angle at the nail bed.

Recognizing Finger Clubbing
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