What causes eczema?
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. Although there is no cure, most people can effectively manage their disease with medical treatment and by avoiding irritants. The condition is not contagious and can’t be spread from person to person.
No one knows for sure, but we do know that the tendency to have eczema is often inherited. So your child is more likely to have it if you or a close family member has had eczema, asthma, or allergies. Eczema is not an allergic reaction to a substance, but it can be provoked by allergens in your child’s diet or environment. The rash can also be aggravated by heat, irritants that come in contact with your child’s skin (like wool or the chemicals in some soaps, lotions, and detergents), changes in temperature, and dry skin.
The cause of eczema (atopic dermatitis) is unknown. It is a genetic disease. It arises from interplay of multiple genes with external environmental factors. The more atopic genes that are present, the less environmental initiators are required to produce eczema. The cells that are at the centre of the inflammation are called T lymphocytes. They can be thought of as the soldiers of the immune reactions of the body.
