Clubbing of the fingers or toes

Also known as: Clubbing

Definition

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.

Considerations

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.

Common Causes

• 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

Home Care

There is no specific treatment for the clubbing itself. Home care depends on the diagnosis.

Call your health care provider if

If you notice clubbing, call your health care provider.

What to expect at your health care provider's office

A person with clubbing usually has other symptoms and signs of a specific condition. Diagnosing that condition is based on:

• Family history
• Medical history
• Physical exam that looks at the lungs and chest

Medical history questions may include:

• Do you have any breathing difficulty?
• Does clubbing affect the fingers, toes, or both?
• Is it becoming more noticeable?
• Is the skin ever bluish-colored?
• What other symptoms do you have?
• When did you first notice this?

The following tests may be done:

• Arterial blood gas
• Chest CT scan
• Chest x-ray
• Echocardiogram
• EKG
• Pulmonary function tests

References

Fitzgerald FT, Murray JF. History and physical examinations. In: Mason RJ, Murray JF, Broaddus CV, Nadel JA, eds. Murray & Nadel's Textbook of Respiratory Medicine. 4th ed. Philadelphia, Pa: Saunders Elsevier;2005:chap 18.

Spicknall KE. Clubbing: an update on diagnosis, differential diagnosis, pathophysiology, and clinical relevance. J Am Acad Dermatol. 2005;52:1020-1028.

See also:

• Symptoms

  Skin discoloration - bluish

  

  Cyanosis is a bluish color to the skin or mucus membranes due to a lack of oxygen in the blood.

Review date:

November 2, 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.

Copyright Information

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). URAC's accreditation program is an independent audit to verify that A.D.A.M. follows rigorous standards of quality and accountability. A.D.A.M. is among the first to achieve this important distinction for online health information and services. Learn more about A.D.A.M.'s editorial policy, editorial process and privacy policy. A.D.A.M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health on the Net Foundation (www.hon.ch).

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- 2008 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.