Hives is a skin reaction from food, medicine or other irritants. The outbreak of swollen, pale red bumps or plaques on the skin appear suddenly.
The condition that we call prickly heat, also known as heat rash, happens to adults and children when sweat becomes trapped under the skin. Prickly heat is sometimes called “sweat rash” or by its diagnostic name, miliaria rubra. Prickly heat is uncomfortable and itchy.
Skin cancer — the abnormal growth of skin cells — most often develops on skin exposed to the sun. But this common form of cancer can also occur on areas of your skin not ordinarily exposed to sunlight. There are three major types of skin cancer — basal cell carcinoma, squamous cell carcinoma and melanoma.