An allergic skin rash may occur as a small, localized rash with face bumps, or as a whole-body rash like hives, says EMedicine Health. An allergic reaction may include one or many symptoms.
Most allergic reactions are minor, such as a bug or mosquito bite or a rash from poison ivy, explains EMedicine Health. The type of allergic reaction is dependent on the person's immune system, which can be unpredictable.
Rashes can go away on their own in a week or so, whether or not the patient seeks treatment. There are some things the patient can do to make himself more comfortable, says WebMD. The patient should avoid contact with whatever is triggering his allergy. The patient can also use a cool compress or take a cold shower to help a rash that has a burning sensation and gently pat the skin dry.
Patients with skin rashes should use an anti-itch cream such as hydrocortisone or calamine lotion to relieve itching and wear loose-fitting clothing. For patients with severe rashes, a damp dressing works best, says WebMD. A soft-cotton, long-sleeve T-shirt or long underwater should be soaked in water, wrung out and worn with a garment over the wet clothing that is snug, but not tight.