Nevus araneus
    
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Nevus araneus

Definition

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

Alternative Names

Nevus araneus

Causes

A spider angioma lesion typically has a red dot in the center with reddish extensions radiating out for some distance around it (a few millimeters to a centimeter or more). Spider angiomas can occur anywhere but are most common on the face and trunk.

Spider angiomas are very common and are especially prevalent during pregnancy and in patients with liver disease.

Symptoms

  • Vascular (blood vessel) lesion
    • May have a red dot in the center
    • Has reddish extensions that radiate from the center
    • Disappears with pressure and reappears when the pressure is released.
  • Common in both children and adults
  • Most frequently seen on the face and trunk

Exams and Tests

No testing is usually necessary, but a skin biopsy may be needed to confirm the diagnosis in some cases.

Treatment

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

Outlook (Prognosis)

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

When to Contact a Medical Professional

A spider angioma can usually be examined at a routine visit. It is especially important for adults to mention the development of a new spider angioma, to rule out associated medical conditions.

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