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Symptom Checker

Step 4: Read and complete the decision guide to learn more about your symptoms.

Fever in Adults

Well, your answer raises the possibility that a rheumatic disease is causing your fever. For example, lupus is an autoimmune disease in which the immune system mistakenly attacks various parts of the body, including the skin, joints, and kidneys. And vasculitis is a set of conditions in which blood vessels are inflamed, which could cause a raised purple rash.

These are potentially serious conditions, so if you have a fever and one more of these symptoms, it's important that you see your doctor right away.

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