It is commonly found inside the folds of elbows, knees, hands, feet and cheeks. It develops due to a defective skin barrier and can be very uncomfortable. These symptoms can manifest on many different areas of the body and can come and go throughout your lifetime. These are usually called 'flare-ups'.

The exact causes of eczema in people that have it are unknown. It's believed that it can be a combination of factors like genetics, autoimmune responses, and skin function. Because of this, eczema can commonly occur in families. There are some known things that cause eczema to flare up, including skin irritants. It's important to know these triggers so that you can avoid them.