Hives that recur several times a week for longer ... Your doctor may also decide to add an H2 antihistamine such as famotidine (Pepcid) or cimetidine (Tagamet) to your treatment regimen.

Medically reviewed by Susan Bard, MDMedically reviewed by Susan Bard, MD Itchy hives on the stomach can be caused by numerous things, from allergic reactions to severe stress and sunburn.