Clubbing

ByRebecca Dezube, MD, MHS, Johns Hopkins University
Reviewed/Revised Nov 2023
VIEW PROFESSIONAL VERSION

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 heart disorders that occur before birth and in 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.

    quizzes_lightbulb_red
    Test your KnowledgeTake a Quiz!
    Download the free MSD Manual App iOS ANDROID
    Download the free MSD Manual App iOS ANDROID
    Download the free MSD Manual App iOS ANDROID