Spider angioma is an abnormal collection of blood vessels near the surface of the skin.
Spider angiomas are very common. They are especially common during pregnancy and in patients with liver disease. They occur in both children and adults.
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.
Spider angiomas often disappear in children but tend to persist in adults.
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.
Habif TP. Vascular tumors and malformations. In: Habif TP, ed. Clinical Dermatology. 5th ed. St. Louis, Mo: Mosby Elsevier; 2009:chap 23.
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