<unk>  is an idiopathic inflammation of the skin that does not fit the picture of other well defined conditions (such as atopic or contact dermatitis) and is a diagnosis of exclusion.
Essential dermatitis
Phototoxic tar dermatitis
Livedoid dermatitis
African blackwood dermatitis
Lacquer dermatitis
Xerotic eczema
Nummular dermatitis
Abietic acid dermatitis