| pigmented purpuric lichenoid dermatosis | An eruption comprised of lichenoid papules variously pigmented from the haemosiderin of the associated purpura; found on the legs, usually in men over 40 years of age. Synonym: Gougerot and Blum disease. (05 Mar 2000) |
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| exudative discoid and lichenoid dermatitis | Disease resembling an exudative form of nummular eczema described in Jewish males with oval lesions on the penis, trunk, and face. Synonym: exudative discoid and lichenoid dermatitis, Sulzberger-Garbe syndrome. (05 Mar 2000) |
| lichenoid | 1. Resembling lichen. 2. Accentuation of normal skin markings observed in cases of chronic eczema. 3. Microscopically resembling lichen planus. (05 Mar 2000) |
| lichenoid amyloidosis | Localised cutaneous amyloidosis with pruritic brownish-red papules, most commonly on the lower legs, due to amyloid infiltration of the papillary dermis. Synonym: amyloidosis cutis, lichen amyloidosis. Origin: G. Leichen, lichen, a lichen-like eruption + eidos, resemblance (05 Mar 2000) |
| lichenoid dermatosis | Any chronic skin eruption, characterised clinically by induration and thickening of the skin with accentuation of skin markings, and microscopically by a band-like lymphocytic infiltration of the papillary dermis. (05 Mar 2000) |
| lichenoid eczema | Thickening of skin with accentuated skin lines in eczema. Synonym: chronic eczema, eczema hypertrophicum. (05 Mar 2000) |
| lichenoid eruptions | Conditions in which there is histological damage to the lower epidermis along with a grouped chronic inflammatory infiltrate in the papillary dermis disturbing the interface between the epidermis and dermis. Lichen planus is the prototype of all lichenoid eruptions. (12 Dec 1998) |
| lichenoid keratosis | A solitary benign papule or plaque, with microscopic features resembling lichen planus, occurring on sun-exposed or unexposed skin. Synonym: lichen planus-like keratosis. (05 Mar 2000) |
| pityriasis | <dermatology> A name originally applied to a group of skin diseases characterised by the formation of fine, branny scales, but now used only with a modifier. Origin: Gr. Pityron = bran (18 Nov 1997) |
| pityriasis amiantacea | An inflammatory condition of the scalp in which heavy scales extend onto the hairs and bind the proximal portions together; it is not caused by a fungus. Synonym: pityriasis amiantacea. (05 Mar 2000) |
| pityriasis capitis | <dermatology> Dried skin that flakes free from the scalp. (27 Sep 1997) |
| pityriasis circinata | A mild exanthematous inflammation of unknown aetiology. It is characterised by the presence of salmon-coloured maculopapular lesions. The most striking feature is the arrangement of the lesions such that the long axis is parallel to the lines of cleavage. The eruptions are usually generalised, affecting chiefly the trunk, and the course is often self-limiting. (12 Dec 1998) |
| pityriasis lichenoides | A subgroup of parapsoriasis itself divided into acute and chronic forms. The acute form is characterised by the abrupt onset of a generalised, reddish-brown, maculopapular eruption. Lesions may be vesicular, haemorrhagic, crusted, or necrotic. Histologically the disease is characterised by epidermal necrolysis. The chronic form shows milder skin changes with necrosis. An important variant of the chronic form is lymphomatoid papulosis. (12 Dec 1998) |
| pityriasis lichenoides chronica | An eruption lasting up to a few years, of reddish-brown papules with central scaling, that clears without scarring. Origin: Lichenoides Mod. L., fr. G. Leichen, lichen, a lichen-like eruption, + eidos, resemblance chronica Mod. L. Chronic, fr. G. Chronikos, pertaining to time; fr. Chronos, time (05 Mar 2000) |
| pityriasis linguae | <clinical sign> A benign condition where there is a map-like appearance to the tongue resulting from irregular denuded patches in the surface (loss of tongue papillae). Likely secondary to local irritation from hot or spicy foods, alcohol or tobacco. There are no significant complications. (27 Sep 1997) |