OTC Antihistamine
People with rashes caused by allergic reactions could alleviate the symptoms with an oral OTC antihistamine such as hydroxyzine or diphenhydramine (Benadryl). These drugs would be helpful in reducing itchiness and aiding the body fight against its responses to histamines in many common triggers of allergies such as grass, pollen, and cat dander. Also, you can use antihistamines to reduce hives on your skin, particularly when they are triggered by allergic reactions. [8]
