There are many things you can do at home to treat a rash from an allergic reaction. For example, you could use an itch-relieving cream or lotion, or take an oral antihistamine to reduce your symptoms. Bathing in a soothing substance, such as baking soda, may help as well. For a severe reaction or an allergic reaction that develops after you have taken a medication, you may need a doctor's evaluation and treatment instead.
One way of treating a rash from an allergic reaction involves efforts to stop it from itching. For this purpose, you can apply creams and lotions that work to stop or reduce the itching and irritation you feel. Often, this type of treatment includes active ingredients such as diphenhydramine and menthol. It is important to note, however, that these creams and lotions won't make the rash go away. Instead, they work to keep you comfortable on a temporarily basis, and they may also help you to avoid scratching and spreading the rash to other parts of your body.
You can also find some over-the-counter oral medications called antihistamines that may help you treat a rash from an allergic reaction. These medications work to not only stop the itching, but also to put a stop to the allergic reaction. If you had a minor allergic reaction and are no longer exposed to the allergen, this may be enough to get rid of the rash. If your reaction was severe or the allergen is still present, it may improve your symptoms but not make the rash go away completely. In some cases, the rash may even go away after a few doses of antihistamine but then return once the medication wears off.
Sometimes, bathing in certain substances can also provide temporary relief from a skin rash caused by an allergic reaction. For example, you may find mixing baking soda or even adding Epsom salts into your bath water helpful. Some people find oatmeal helpful for this purpose as well. No matter which substance you add, it is usually important to make sure the water is cool or lukewarm. Taking a hot bath may worsen the itching and irritation, especially if it leaves the skin overly dry after your bath.
While you can treat a rash from an allergic reaction at home, you may be better served by seeing a doctor in some cases. For example, you may do well to see a doctor for treatment if the rash is severe or covers a large part of your body. Likewise, a trip to a doctor is in order if you are not sure the rash has been caused by an allergy or if you are having other symptoms, such as difficulty breathing and swelling of your face, throat, or mouth. Additionally, if the skin rash seems related to a medication you have taken, you may do well to contact a doctor.
