Clubbing of the fingers or toes

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Clubbed fingers

Clubbing

Clubbing is a thickening of the flesh under the toenails and fingernails. The nail curves downward, similar to the shape of the round part of an upside-down spoon.

Clubbing

Clubbing occurs with a wide number of diseases. It is most often found in heart and lung diseases that cause a lower-than-normal amount of oxygen in the blood.

Clubbing may also be due to lung cancer, and diseases of the liver and gastrointestinal tract.

Clubbing may also occur in families. In this case it may not be due to an underlying disease.

• Chronic lung conditions
  • Bronchiectasis
  • Cystic fibrosis
  • Lung abscess
  • Lung cancer
  • Pulmonary fibrosis
• Congenital heart disease (cyanotic type)
  • Tetralogy of Fallot
  • Total anomalous venous return
  • Transposition of the great vessels
  • Tricuspid atresia
  • Truncus arteriosus
• Digestive system diseases
  • Celiac disease
  • Cirrhosis
  • Crohn's disease and ulcerative colitis
• Graves disease or hyperthyroidism
• Other conditions
  • Dysentery
  • Other types of cancer, including liver, gastrointestinal, Hodgkin's lymphoma
  • Subacute endocarditis
  • Tuberculosis of the intestines

Review Date: 11/02/2009
Reviewed By: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).

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