Itching is the cardinal feature of atopic dermatitis. The genetically compromised skin itches. Patient then scratch, even in their sleep. This stimulates the formation of dermatitis. Exposure to aeroallergens during pollen season can also be a stimulus for eczema.
Atopic dermatitis on the arms. This is a typical location that is produced by scratching. This area perspires easily with exertion. The perspiration causes itching.
Atopic dermatitis on the eyelids occurs commonly in patients who are predisposed to develop atopic dermatitis.