Purpura Hemorrhagica is a medical condition that causes purple patches on the skin due to bleeding beneath the skin's surface. It's also known as Henoch-Schönlein purpura and allergic purpura. Some common synonyms for Purpura Hemorrhagica include Purpura, Blood Vessel Inflammation, Bleeding Disorder, and Vascular Disorder. The symptoms of this condition may also include joint pain, digestion issues, and kidney damage. Treatment may involve medications to reduce inflammation, pain, and swelling. Diagnosis of Purpura Hemorrhagica may involve blood tests, urinalysis, and skin biopsy. If left untreated, this condition can lead to serious complications, including organ damage and permanent disability.