To: Sun Tzu who wrote (46808 ) 12/15/2021 10:54:06 PM From: rimshot Read Replies (1) | Respond to of 97757 Symptoms of chronic hives Hives, also called urticaria, are characterized by pink swellings on the skin called welts. These can appear anywhere on body and are itchy. The welts can last a few hours with new hives appearing as old ones disappear. Chronic hives are those that last longer than six weeks. About 95 percent of chronic hive cases are idiopathic , meaning there is no discernible cause, according to American Osteopathic College of Dermatologists . Heat rash Heat rash , also called miliaria or prickly heat, is characterized by raised, red bumps, which can be inflamed and itchy. The bumps are usually smaller than hives and resemble small pimples. It occurs when sweat ducts are blocked and usually disappears in a few days. Heat rash is common in babies, according to FamilyDoctor.org , because their sweat glands are not fully mature. Contact dermatitis Contact dermatitis shares many symptoms with hives, including a red rash, bumps, and itchy dry skin. While hives can appear anywhere on body, contact dermatitis appears where the skin has been exposed to an irritant or allergen, according to the American Academy of Dermatology . It usually goes away within a few days to a few weeks. Treatment uses antihistamines, which are also used for hives. Eczema Eczema can look like hives. Both have red patches of itchy skin. Eczema, however, also has small, raised bumps. It tends to appear on the cheeks and chin but can occur anywhere on the body, according to the National Eczema Foundation . Pityriasis rosea Pityriasis rosea begins with large, raised, red patches of skin. There is a herald patch, called the mother patch, which is similar in appearance to hives, according to the American Academy of Dermatology . The rash spreads around the initial patch and you may have a headache, fever, sore throat, and stuffy nose. It usually goes away in four to six weeks and may be treated with