Reference Index - Disease & Conditions

Back to Health Library

Circulatory system
Circulatory system

Spider angioma


Spider angioma is an abnormal collection of blood vessels near the surface of the skin.

Alternative Names:

Nevus araneus

Causes, incidence, and risk factors:

Spider angiomas are very common. They are especially common during pregnancy and in patients with liver disease. They occur in both children and adults.

  • Blood vessel sore (lesion)
    • May have a red dot in the center
    • Has reddish extensions that reach out from the center
    • Disappears with pressure and reappears when pressure is released
  • Most often seen on the face and neck

Signs and tests:

No testing is usually necessary, but a skin biopsy may be needed to confirm the diagnosis in some cases. Blood tests may be done if a liver problem is suspected.


Treatment is generally not necessary. In some cases, electrocauterization or laser treatment may be used.

Support Groups:

Expectations (prognosis):

Spider angiomas often disappear in children but tend to persist in adults.


Calling your health care provider:

A spider angioma can usually be examined during a routine visit with your health care provider. It is important to mention to your doctor if you develop a new spider angioma, to rule out related medical conditions.


Review Date: 10/3/2008
Reviewed By: Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

Greater Baltimore Medical Center | 6701 North Charles Street | Baltimore, MD 21204 | (443) 849-2000 | TTY (800) 735-2258
© 2015  GBMC. This website is for informational purposes only and not intended as medical advice or a substitute for a consultation with a professional healthcare provider.