Does oral corticosteroid treatment treat skin vasculitis?

Skin vasculitis occurs when inflammation affects small blood vessels in the skin. It can produce clusters of red or purple spots that may feel raised, along with pain, burning, swelling or blisters. Corticosteroids can calm immune inflammation, but they do not address every trigger. A clinician may look for a medicine reaction, infection, autoimmune illness or another condition before choosing treatment.

Some forms remain limited to the skin, while others affect organs such as the kidneys, joints, nerves or digestive system. The treatment plan therefore depends on examination, symptoms and sometimes blood or urine testing.

Do not self-treat new purple spots with leftover medicine. Arrange assessment, especially when the rash is spreading, painful or leaving sores. If oral corticosteroids are prescribed, follow the schedule and report new symptoms. Resting affected legs, avoiding friction and recording medicines or recent illnesses can help the clinician understand the episode.

Learn more about this medicine in [Oral Corticosteroid Treatment](/treatments/medical-dermatology/oral-corticosteroid-therapy/).

Seek urgent medical help for blood in urine, very dark urine, severe abdominal pain, vomiting blood, chest pain, breathing difficulty, new weakness, numbness or confusion. Prompt review is also needed for rapidly spreading purpura, skin breakdown, fever or severe pain. These signs can indicate more than skin involvement or a serious infection.

Ask whether the rash needs a skin biopsy, whether urine and blood tests are appropriate, what trigger is being considered, how you will know treatment is working, and how oral corticosteroids would be tapered if prescribed.