Discoid eczema is a type of eczema that causes round- or oval-shaped red patches on the skin. Eczema is also called dermatitis. Dermatitis is a general term which means inflammation of the skin. Discoid refers to the disc shape of the eczema patches. Discoid eczema is sometimes called nummular eczema. Nummular literally means coin-shaped, another way of describing the shape of the patches of eczema.
This is a companion discussion topic for the original article at https://patient.info/skin-conditions/atopic-eczema/discoid-eczema