Clubbing, also known as digital clubbing or nail clubbing, is a deformity of the finger or toe nails associated with a number of diseases, mostly of the heart and lungs. It is characterized by bulbous enlargement of the ends of one or more fingers or toes, resulting in loss of the normal angle between the skin and nail plate and excessive sponginess of the nail base. Clubbing is often a sign of an underlying health condition and may occur with joint effusions, joint pains, and abnormal skin and bone growth.
The most common causes of clubbing are lung cancer, lung infections, interstitial lung disease, cystic fibrosis, or cardiovascular disease. Other possible causes include congenital or familial forms, celiac disease, cirrhosis of the liver and other liver diseases, dysentery, Graves disease, overactive thyroid gland, and other types of cancer, including liver. Clubbing may also run in families and occur unassociated with other medical problems.
If you notice nail clubbing or any changes in your nails, it is important to see a healthcare provider as it may be a sign of a health condition that needs treatment.
