Eczema comes in many different forms and can therefore also have different causes.
Eczema looks like red patches on your skin, often with flakes. (Severe) itching is a symptom of eczema. There may also be bumps, fissures, or scabs on the skin.
If you are not sure whether you suffer from eczema, contact your doctor or dermatologist. They can easily tell if you have eczema by inspecting the skin.