pityriasis versicolor


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Related to pityriasis versicolor: pityriasis alba

pityriasis

 [pit″ĭ-ri´ah-sis]
any of various skin diseases characterized by the formation of fine, branny scales.
acute lichenoid pityriasis an acute or subacute, sometimes relapsing, widespread macular, papular, or vesicular eruption that tends to crusting, necrosis, and hemorrhage; when it heals it leaves pigmented depressed scars, followed by a new crop of lesions. Progression to the chronic lichenoid form occasionally occurs.
pityriasis al´ba a chronic condition with patchy scaling and hypopigmentation of the skin of the face.
chronic lichenoid pityriasis a chronic brown to red-brown scaly macular eruption, seen mainly on the trunk, with epidermal changes and a perivascular lymphocytic infiltrate. It may arise independently or happen as a progression of the acute lichenoid form.
pityriasis ro´sea a common acute or subacute, self-limited exanthematous disease of unknown etiology. It begins with a solitary red to tan plaque (herald plaque), usually on the trunk, arms, or thighs, which is followed by similar but smaller papular or macular lesions; these later may peel and leave a scaly collarette.
pityriasis ru´bra pila´ris a chronic inflammatory skin disease marked by pink scaling macules and cone-shaped horny follicular papules; it usually begins with severe seborrhea of the scalp and face, associated with keratoderma of palms and soles.
pityriasis versi´color tinea versicolor.

tin·e·a ver·sic·'o·lor

an eruption of tan or brown branny patches on the skin of the trunk, often appearing white, in contrast with hyperpigmented skin after exposure to the summer sun; caused by growth of the fungus Malassezia furfur in the stratum corneum with minimal inflammatory reaction.

tin·e·a ver·si·col·or

(tin'ē-ă vĕr'si-kŏ-lŏr)
An eruption of tan or brown branny patches on the skin of the trunk, often appearing white, in contrast with hyperpigmented skin after exposure to the summer sun; caused by growth of Malassezia furfur in the stratum corneum with minimal inflammatory reaction.
Synonym(s): pityriasis versicolor.

pityriasis versicolor

A common fungus infection of the outer layer of the skin (the EPIDERMIS) that causes white, brown, or salmon-coloured flaking patches. The condition may be inapparent until the unaffected skin becomes tanned by the sun. Treatment is by antifungal creams or lotions.

pityriasis versicolor

common skin disease caused by infection with Malassezia furfur , causing depigmentation in affected skin; eradicated by topical ketoconazole or imidazole preparations
References in periodicals archive ?
These organisms can induce pityriasis versicolor and have an important role as an aggravating factor in several skin diseases such as atopic dermatitis and seborrheic dermatitis, especially in atopic dermatitis they act as an exacerbating allergic factor.
THE most likely cause is pityriasis versicolor, an uncommon rash that usually develops after sun exposure.
Gupta AK, Batra R, Bluhm R, Faergemann J: Pityriasis versicolor.