Hives for Heroes empowers veterans through beekeeping, honey bee conservation, suicide prevention, and a healthy transition from service. The main difference between hives and a rash is that hives are a particular type of rash, characterized by swollen, pale-red or skin-colored bumps on the skin that appear and disappear quickly, and tend to “blanch” (which means turn white) when pressed.Hives are also known as urticaria. Hives are a type of rash, but there are many other different ways rashes present. Regional Scale Hives : National Forage Map : NASA Video: Note: Since the end of project funding in 2011, and the NASA Principal Investigator retirement in 2012, this web site has received very little attention. We maintain it because useful and relevant information exists here, and because of the traffic and specific interest the Naitonal Forage Map still generates. Even though the Ayers and. Hives can be very small (such as the size of the tip of a pen) to very large (such as the size of a dinner plate). In this gallery of hives pictures, you will find various photos of different types of hives and the important characteristics of each. This first picture shows what a typical case of hives looks like. To diagnose hives or angioedema, your doctor will likely look at your welts or areas of swelling and ask about your medical history. You may also need blood tests or an allergy skin test. Treatment. If your symptoms are mild, you may not need treatment. Hives and angioedema often clear up on their own. But treatment can offer relief from intense itching, serious discomfort or symptoms that. Hives (known in the medical community as urticaria) are red, swollen welts that can be painful or itchy. They look like a lot of other common skin ailments, but they usually show up and disappear.