Take an oral antihistamine such as cetirizine, loratadine, or fexofenadine
Use a cool compress on the affected skin
Take a cool shower or bath
Avoid heat, sweating, and tight clothing
Stop scratching or rubbing the hives
Apply calamine lotion or colloidal oatmeal
Avoid known triggers such as certain foods, medications, or insect stings
Stay away from alcohol and NSAIDs if they worsen your hives
Rest in a cool environment
Seek urgent medical help if you have trouble breathing, swelling of the lips or tongue, dizziness, or throat tightness