Inflamed red skin eruption-rash, itchy, and exacerbated by scratching. Dust mites, mould spores, animal danders (all inhaled, but contact can contribute), foods and yeasts, can be allergens. Desensitization and diets are required.

Chlorine in domestic water is a not uncommon cause of eczema, and filtering of all water (cooking, steaming, drinking) is necessary. Contact Dermatitis with chlorine is relatively uncommon. Weeping eczema is infected, and needs antibiotics.