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Splinter hemorrhages
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Splinter hemorrhages

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Fingernail hemorrhage

Splinter hemorrhages are small areas of bleeding (hemorrhage) under the fingernails or toenails.

I Would Like to Learn About:

  • Considerations

    Splinter hemorrhages look like thin, red to reddish-brown lines of blood under the nails. They run in the direction of nail growth.

    They are named splinter hemorrhages because they look like a splinter under the fingernail. The hemorrhages may be caused by tiny clots that damage the small capillaries under the nails.

    Splinter hemorrhages can occur with infection of the heart valves (endocarditis). They may be caused by vessel damage from swelling of the blood vessels (vasculitis) or tiny clots that damage the small capillaries (microemboli).

  • Causes

    • Bacterial endocarditis
    • Injury to the nail
  • Home Care

    There is no specific care for splinter hemorrhages. Follow your health care provider's instructions for treating endocarditis.

  • When to Contact a Medical Professional

    Contact your health care provider if:

    • You notice splinter hemorrhages and you haven't had any recent injury to the nail

    Note: Splinter hemorrhages usually appear late in endocarditis. Likely other symptoms will cause you to visit your health care provider before splinter hemorrhages appear.

  • What to Expect at Your Office Visit

    Your health care provider will examine you to determine the cause of splinter hemorrhages. The health care provider may ask you the following medical history questions:

    • When did you first notice this?
    • Have you had an injury to the nails recently?
    • Do you have endocarditis, or has your health care provider suspected that you have endocarditis?
    • What other symptoms do you have, such as shortness of breath, fever, general ill feeling, or muscle aches?

    Physical examination may include special attention to the heart and blood circulation systems.

    Laboratory studies may include:

    • Blood cultures
    • Complete blood count (CBC)
    • Erythrocyte sedimentation rate (ESR)

    In addition, your health care provider may order:

    • Chest x-ray
    • ECG
    • Echocardiogram

    After seeing your health care provider, you may want to add a diagnosis of splinter hemorrhages to your personal medical record.

Related Information

  EndocarditisAllergic vasculiti...    

References

Tosti A. Diseases of hair and nails. In: Goldman L, Ausiello D, eds. Cecil Medicine. 24th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 450.

Mackowiak PA, Durack DT. Fever of unknown origin. In: Mandell GL, Bennett JE, Dolin R, eds. Principles and Practice of Infectious Diseases. 7th ed. Philadelphia, Pa: Elsevier Churchill Livingstone; 2009:chap 51.

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Review Date: 8/19/2013  

Reviewed By: Linda J. Vorvick, MD, Medical Director and Director of Didactic Curriculum, MEDEX Northwest Division of Physician Assistant Studies, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.

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