The inflammation results from antibodies produced by the body in response to an infection somewhere in the body and deposited in the blood vessels. The risk is greater if you have a history of an acute respiratory infection. These purplish areas may be raised and last several days to several weeks. The disease usually subsides without treatment within 4 weeks but may recur after several weeks.
Most people recover without permanent kidney damage.
Rarely, kidney failure may occur. Most children recover completely without specific treatment, but many adults may have permanent kidney damage. If a specific medication is identified as the cause of the inflammation, a doctor may recommend discontinuing the medication. Treatment may also include corticosteroids. Use of this site signifies your agreement to the terms of use .