Types. Acute urticaria and/or angioedema: With these conditions, hives or swelling lasts less than 6 weeks. The most common causes are foods, medicines, latex, and infections. Insect bites or a ...

Medically reviewed by Corinne Savides Happel, MD A rash around a child's mouth is not usually not due to food allergies. It is usually due to skin irritation, viruses, or bacterial infections.

An extended day in the sun can be anything but relaxing for those who develop polymorphous light eruption, an uncomfortable, ...

According to the American Academy of Dermatology Association, you should do the following: Immediately wash the part of your skin that touched the plant with one of the following: Rubbing alcohol, ...