pit·y·ri·a·sis

(pĭt′ĭ-rī′ə-sĭs)

n. pl. pit·y·ri·a·ses (-sēz′)

Any of various skin diseases of humans and animals, characterized by epidermal shedding of flaky scales.

[Greek pitūriāsis, from pitūra, grain husks, bran, dandruff, perhaps from dissimilation of *putūra; see pau- in Indo-European roots, or akin to pitulos, repetitive striking; see pet- in Indo-European roots.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

pityriasis

(ˌpɪtəˈraɪəsɪs)

1. (Pathology) any of a group of skin diseases characterized by the shedding of dry flakes of skin

2. (Veterinary Science) a similar skin disease of certain domestic animals

[C17: via New Latin from Greek pituriasis scurfiness, from pituron bran]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

pit•y•ri•a•sis

(ˌpɪt əˈraɪ ə sɪs)

n.

any of several skin diseases marked by the shedding of branlike scales.

[1685–95; < New Latin < Greek pitȳríāsis branlike eruption =pítȳr(on) bran, scale + -iāsis -iasis]

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

pityriasis - any of several skin disorders characterized by shedding dry flakes of skin

dermatosis - disorder involving lesions or eruptions of the skin (in which there is usually no inflammation)

dandruff - a condition in which white scales of dead skin are shed by the scalp

pityriasis alba - common form of pityriasis (usually in children or young adults) characterized by round patches of depigmentation

pityriasis rosea - pityriasis in which an itchy rash develops over the trunk and extremities

Translations

pitiriasi

pityriasis

n pitiriasis f; — alba pitiriasis alba; — rosea pitiriasis rosada; — versicolor pitiriasis versicolor

Mentioned in

References in periodicals archive

A study based on the evaluation of skin infection prevalence among male children of the primary section in Jeddah, Saudi Arabia, found there was an increasing prevalence of 12.9% nevi, 11% head-lice, 8% pityriasis alba and 6.1% alopecia.17 The prevalence rate was similar to the present study (2.9% each) concerning acne vulgaris and warts.

Prevalence of skin disorders and associated socio-economic factors among primary school children in the Eastern region of Saudi Arabia

PMH must be distinguished from some of its clinical mimickers, including vitiligo, hypopigmented mycosis fungoides, tinea versicolor, and pityriasis alba.

Progressive macular hypomelanosis

Accuracy of dermoscopic criteria for the diagnosis of psoriasis, dermatitis, lichen planus and pityriasis rosea.

Dermatoscopic features of Koebner phenomenon in lichen planus on light and dark skin

A dermatologist was consulted, and then, pityriasis alba, reactive dermatitis, and zinc deficiency were suspected.

Early diagnosis of a case of infantile cystic fibrosis and review of literature in Taiwan

* Pityriasis rosea is a viral exanthem that may be associated with constitutional symptoms and often presents initially with a herald patch progressing to a classic "Christmas tree" distribution with a fine collarette of scale.

Pruritic rash on chest and back: Was a recent change in diet to blame for this patient's rash?

Objective: Comparison of efficacy of combination comprising 2% ketoconazole solution wash plus topical 1% clotrimazole versus topical 1% clotrimazole alone in management of patients with Pityriasis versicolor.

COMPARISON OF EFFICACY OF COMBINATION OF 2% KETOCONAZOLE SOLUTION WASH AND TOPICAL 1% CLOTRIMAZOLE WITH TOPICAL 1% CLOTRIMAZOLE ALONE IN CASES OF PITYRIASIS VERSICOLOR

Pityriasis versicolor (PV) is a superficial fungal infection of skin, caused by genus Malassezia.1 M.

Frequency of hair loss in lesions of pityriasis versicolor

Christmas tree rash (pityriasis rosea) is a fine, itchy, scaly rash that usually appears first as a single patch on the chest, abdomen or back.

WHAT IS IT? Christmas tree rash; DR MIRIAM STOPPARD; Helping to keep you fit and healthy

[1] Primary erythroderma arises on normal looking skin due to an underlying systemic disorder including malignancy or because of a drug reaction, while secondary erythroderma arises from pre-existing dermatoses like psoriasis, atopic dermatitis, Pityriasis rubra pilaris and actinic dermatosis.

A CLINICO-AETIOLOGICAL STUDY OF CASES OF ERYTHRODERMA ATTENDING TERTIARY CARE HOSPITAL IN NORTH-EAST INDIA

Among all, 112 pieces of data were psoriasis, 61 seboreic dermatitis, 72 lichen planus, 49 pityriasis rosea, 52 cronic dermatitis and 20 pityriasis rubra pilaris.

Skin Diseases Predictive Model Using Individual Base and Ensemble Base Approach

Erythemato-squamous diseases to be classified include pityriasis rubra pilaris, seborrheic dermatitis, psoriasis, lichen planus, chronic dermatitis, and pityriasis rosea.

Fuzzy Neural System Application to Differential Diagnosis of Erythemato-Squamous Diseases

The most common viral infection was verruca, the most common bacterial infection was impetigo, the most common superficial fungal infection was pityriasis versicolor, and the most common parasitic infection was pediculosis capitis.

Distribution of childhood skin diseases according to age and gender, a single institution experience