Is allergic purpura contagious?
Disease description:
My child suddenly developed many purplish-red spots on the legs. The doctor diagnosed it as allergic purpura. Is this condition contagious? Will it affect other children if my child plays with them?
Doctor's answer (1)
Dr. Liu Wenmin
In general, Henoch-Schönlein purpura (HSP) is not contagious.
HSP is not an infectious disease transmitted from person to person through contact, airborne droplets, or any other means. Rather, it is a disease caused by an immune system reaction, primarily characterized by purple spots appearing on the skin, resulting from inflammation and bleeding of small blood vessels. This condition is usually associated with the body's allergic response to certain infections, medications, or foods. It is not directly caused by viruses or bacteria and therefore is not contagious, so there is no need to worry about transmitting it to others.
For individuals with cutaneous Henoch-Schönlein purpura, it is important to identify and avoid known triggering factors, and to follow medical advice for treatment in order to manage symptoms and prevent complications. During treatment, doctors may recommend the use of antihistamines, corticosteroids, or other therapies to reduce inflammation and alleviate symptoms.
In daily life, patients are advised to maintain good lifestyle habits, keep the skin clean and dry, maintain regular sleep patterns, and follow a light diet, all of which can help promote recovery from the condition.
