<unk>  refers to one of the three major classes of skin conditions characterized by<unk>  skin eruptions.<unk>  are distinguished from other purpura by size (0.3–1 cm) and are most often seen in the lower extremities. Pigmentary<unk>  eruptions may present with one of several clinical patterns. There may be overlapping characteristics among<unk>  and between their signs and those of other<unk>  eruptions. Examples of the<unk>  group include: :* Schamberg's disease :* Majocchi's disease (Purpura annularis telangiectodes) :* Gougerot-Blum syndrome<unk><unk>  lichenoid dermatitis) :* Ducas and Kapetanakis<unk>  purpura :* Lichen aureus Although vascular damage may be present, it is insufficient for these conditions to be considered forms of vasculitis. A few very small non-blinded studies of treatment with narrow-band ultraviolet light have been reported as promising.
Pigmented purpuric dermatosis
Eosinophilic dermatosis
Nodular lichen myxedematosus
Congenital erosive and vesicular dermatosis
Paraneoplastic acrokeratosis
Transient acantholytic dermatosis
Acquired perforating dermatosis
Ichthyosis bullosa of Siemens