Eczema is a common skin disease. Eczema is dry, rough, red, itchy, skin dryness, crusting, flaking, blistering, cracking, oozing, or bleeding. The most common symptom that people complain about is the itch that is a side effect of eczema. It's sometimes called the 'itch that rashes', meaning that once you start scratching, you develop a rash.
Eczema is the result of immune system response to an irritant either through contact, inhalation or ingestion. The body activates an immune system response often resulting in a flushed appearance, a rash, or welts on the skin.