Ashy dermatosis or erythema dischromicum perstans: Report two cases with follow-up of two years [Dermatosi cinerea o erythema dischromicum perstans: Descrizione di due casi autoctoni con follow-up di due anni]

Ashy dermatosis is a not uncommon variety of cutaneous hyperpigmentation occurring particularly in Latin America. Clinical features include hyperpigmented macules of blueish-grayish color different size and shape which tend to coalesce in larger areas of several cm with an erythematous elevated peripheral rim surrounded by an hypochromic hald. The Authors describe two clinical cases and discuss the main laboratory and clinical differences between lichen planus pigmentosus and ashy dermatosis.