Medically reviewed by Alex Yampolsky, PharmD Benadryl (diphenhydramine) is a first-generation antihistamine. It helps treat mild to severe allergic reactions and may also be taken for motion sickness ...

However, in rare cases, skin contact with water can trigger an allergic reaction. The scientific name for this rare condition is aquagenic urticaria. Hives — a type of itchy rash — develop ...

Hives are a type of rash that results from an allergic reaction, insect bite, infection, and more. You can identify hives by pressing down on the bump — if it turns white, it's a hive.

The difference between this and an allergic reaction was exemplified in patients who had both irritant and allergic reactions at the same time (see Fig 3). Additionally, patients that had ...

However, few reports describing proven allergic contact dermatitis (ACD ... the bandage or tape left on for 7 days had an irritant reaction. Conclusion: We feel that the perceived reactions ...