Can acute urticaria be contagious

Acute urticaria is not contagious, because most of the acute urticaria are caused by allergic factors, a few will also be caused by infectious factors, but the proportion is relatively small. If several people around the same time show acute urticaria, often because of eating certain substances that are easy to cause allergies, or contact with certain things that are easy to cause skin allergies, rather than urticaria caused by mutual infection. Generally, allergens should be found from the medical history. Antihistamines can also be taken to help relieve symptoms.