Hives can appear anywhere on the body and last for a few minutes or up to a few days. Symptoms associated with hives include itchiness, stinging and burning, says WebMD. They look like red welts and vary in size. Common causes of hives include extreme temperatures, infections and allergic reactions.
Rosacea is a condition in which people flush easily, and the flush is followed by redness on the nose, cheeks, forehead and chin. It also causes thickened skin, bumps and pimples filled with pus, explains WebMD. Over time, the appearance can become increasingly red, and it sometimes affects the eyes. Topical and oral medications are available for treating this condition.
Cold sores are fluid-filled blisters that form on the mouth or nose and are a physical symptoms of the herpes simplex virus. These sores are often painful and last up to 10 days, states WebMD. This condition is highly contagious and needs to be treated with antiviral creams or pills. Triggers for developing cold sores include fevers, too much sun exposure, stress and hormonal changes.Learn more about Skin Conditions