the exact cause of eczema is unknown but it's thought to be linked to an overactive response by the body's immune system to unknown triggers. in addition eczema is commonly found in families with a history of other allergies or asthma. some people may suffer "flare-ups" of the itchy rash in response to certain substances or conditions. for some coming into contact with rough or coarse materials may cause the skin to become itchy. for others feeling too hot or too cold exposure to certain household products like soap or detergent or coming into contact with animal dander may cause an outbreak. upper respiratory infections or colds may also be triggers. stress may cause the condition to worsen. the condition is not contagious and can't be spread from person to person.
what causes eczema?