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A lupus "flare" or "flare up" is when your lupus symptoms worsen and you feel ill as a result. The formal definition of a flare is: A measurable increase in disease activity in one or more organ ...

Many people who have lupus have a mild case of the disease. But there are times when symptoms -- pain and inflammation-- get worse. That’s called a flare or flare-up. When flares happen, you may even ...