pityriasis lichenoides chronica

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pit·y·ri·a·sis li·che·noi·des chron·i·ca

an eruption, lasting up to a few years, of reddish-brown papules with central scaling; it clears without scarring.
[lichenoides Mod. L., fr. G. leichēn, lichen, a lichen-like eruption, + eidos, resemblance; chronica Mod. L. chronic, fr. G. chronikos, pertaining to time; fr. chronos, time]

pityriasis lichenoides chronica

An uncommon, idiopathic dermatosis that primarily affects younger patients (under age 30), which is characterised by waves of erythematous, scaly papules that may persist for months.

Unknown; thought to be a hypersensitivity reaction to viruses—e.g., EBV, adenovirus, parvovirus B19.

Various modalities have been tried, including phototherapy (UV, solar), topical steroids and antibiotics.
References in periodicals archive ?
Pityriasis lichenoides chronica (PLC) and pityriasis lichenoides et varioliformis acuta (PLEVA) are the chronic and acute forms, respectively, of pityriasis lichenoides, an uncommon clonal T-cell disorder.
Adalimumab-induced pityriasis lichenoides chronica that responded well to methotrexate in a patient with psoriasis.
Infliximab-induced pityriasis lichenoides chronica in a patient with psoriasis.
Pityriasis rosea must be differentiated from dermatophytosis, secondary syphilis, psoriasis, pityriasis lichenoides chronica, erythema annulare centrifugum, and pityriasis rosealike drug eruptions.
* Pityriasis lichenoides chronica may mimic pityriasis rosea in distribution, but there are no collarette scales.
Bromelain is also effective in treating a skin disorder called pityriasis lichenoides chronica, which is characterized by the appearance of long-lasting, asymptomatic skin lesions.
Other conditions that can trigger PR include secondary syphilis (characterized by involvement of the palms and soles, lymphadenopathy, and greater lesional infiltration); seborrheic dermatitis (characterized by greater involvement of the scalp and other hairy parts of the body); nummular eczema (more pruritic); and pityriasis lichenoides chronica, which involves more chronic and relapsing lesions.
Pityriasis lichenoides chronica specimens showed spongiosis in all of its samples.
OBJECTIVES: Pityriasis lichenoides chronica (PLC) is a skin disease of unknown etiology.