Allergic vasculitis is hypersensitivity to a drug or foreign substance that leads to inflammation and damage to blood vessels of the skin.

Allergic vasculitis is caused by an allergic reaction to a drug or other foreign substance.

Here is its symptoms:

• Skin lesions usually located on legs, buttocks, or trunk
• Purpura
• Blisters on the skin
• Urticaria (hives), may last longer than 24 hours
• Necrotic ulcers (open sores with dead tissue)

And how to treat it?

The goal of treatment is to reduce inflammation.

Aspirin or corticosteroids may be prescribed to reduce inflammation of the blood vessels. (DO NOT give aspirin to children except as advised by the health care provider.)

If possible, your doctor may tell you to stop taking the medicine that caused this condition. Do not stop taking any medicine without first talking to your doctor.