How does red knot rise on the face and itch return a responsibility

If red pimples and itching appear on the face, it may be an allergic reaction on the face skin. The most common allergy may be allergic dermatitis or contact dermatitis. No matter which factor is caused, it is due to allergic stimulation and certain allergic inflammation. If this condition is shown, anti-allergic treatment is mainly given, such as oral chlorpheniramine or oral loratadine.