This document discusses different types of eczema and their characteristics. It covers nummular eczema, which presents as grouped papules and vesicles that are thick in the center and merge at the borders. Irritant eczema and tinea are also mentioned, with irritant eczema having a sharp border and central clearing, while tinea has a border and central clearing. Finally, it questions whether some forms of endogenous dermatitis can be considered under the umbrella of atopic dermatitis or are associated with atopy.