Beau's Lines

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Beau's lines are horizontal or transverse depressions in the nail that may be confused with nail ridging. This phenomenon was originally described in 1846 by the French physician Joseph Honoré Simon Beau. These lines are caused by diseases that affect the entire body, including malnutrition, heart attack (myocardial infarction), severe infections (such as mumps, measles, pneumonia, and others), and metabolic disturbances, including poorly controlled diabetes. However, Beau's lines can result from any disease process that is severe enough to affect the growth plate of the nail. Trauma may also be a cause of Beau's lines or nail ridges. The timing of the disease can be estimated by measuring the distance from the Beau's line to the nail bed.

Patients may experience the related symptoms of Koilonychia, Vertical Ridges On The Fingernails, and/or Nail Separation.

Medically Reviewed by a Doctor on 6/21/2012

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REFERENCES:

Fawcett, Robert S., and Sean Lindord, MD. "Nail Abnormalities: Clues to Systemic Disease." American Family Physician 69.6 Mar. 15, 2004.: 1417-1424. <http://www.aafp.org/afp/2004/0315/p1417.html>.

"Fingernail Abnormalities." Medscape.com. <http://reference.medscape.com/features/slideshow/fingernail-abnormalities>.

Causes of Beau's Lines
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Other Causes of Beau's Lines
  • Bacterial Infection
  • Chemotherapy
  • Fungal Infection
  • Malnutrition
  • Medications
  • Severe Infections
  • Surgery
  • Toxins




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