Hypersensitivity Vasculitis

Hypersensitivity vasculities is sometimes called leukocytoclastic vasculitis. Its symptoms are similar to Henoch-Schönlein purpura. However, hypersensitivity vasculitis affects persons who are older. It usually isn't accompanied by the abdominal pain and digestive disorders that occur with Henoch-Schönlein purpura.

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Symptoms

If a person has at least three of the following symptoms, they are diagnosed as having the condition:

  • Being older than 16 when the symptoms appear
  • Having taken medications before the symptoms appeared
  • A slightly elevated, purple-red rash over one or more areas of skin. The rash doesn't whiten when pressed.
  • Flat and raised lesions of different sizes over one or more areas of skin
  • Changes in the cells of the small blood vessels that can be seen through a microscope
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Diagnosis

A doctor will do a physical examination and ask about symptoms. He or she will rule out Henoch-Schönlein purpura as a cause of the symptoms.

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Treatments

There is no specific treatment for this disorder. Most cases disappear without treatment. If symptoms persist, therapy with corticosteroids such as prednisone is usually tried.