Skin plaques start to appear as reddened areas of inflammation, thus often leading to the mistaken diagnosis of Atopic Dermatitis. Following inflammation, the red areas start keratinization, eventually forming the definitive plaques that appear brownish, dry and scaled. Following quite a precise temporal pattern of evolution, the keratinized plaques last for weeks or months, eventually leading to periods of desquamation that leads to the uncovering of "normal" skin. Then, a new cycle usually begins, leaving a variable number of days of delay between the cycles. Though environmental causes are not well understood, it seems clear that factors like sun exposure, wind and air conditioning add to the degree of skin inflammation that sets the start of a new cycle.
Progressive symmetric erythrokeratodermia
Congenital erosive and vesicular dermatosis
Subcutaneous granuloma annulare
Atrophia maculosa varioliformis cutis
Dermal dendrocyte hamartoma
Erythrokeratodermia variabilis
Relapsing linear acantholytic dermatosis
Nodular lichen myxedematosus