- Pathology. any of various skin diseases marked by the shedding of branlike scales of epidermis.
- Veterinary Pathology. a skin disease in various domestic animals marked by dry scales.
Origin of pityriasis
1685–95; < New Latin < Greek pitȳríāsis branlike eruption, equivalent to pítȳr(on) bran, scale + -iāsis -iasis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for pityriasis
Eczema and psoriasis, pityriasis, impetigo, and porrigo decalvans are forms of skin eruption seen.
Since Pityriasis is endemic to Borneo, it probably was detached from the parent stock at an early period.
The Australasian affinities of Pityriasis emphasize its zoogeographical peculiarities.
How is pityriasis rosea distinguished from ringworm, psoriasis and the squamous syphiloderm?Essentials of Diseases of the Skin</p>
Henry Weightman Stelwagon
Pityriasis, a skin eruption attended with branlike desquamation.The Nuttall Encyclopaedia
Edited by Rev. James Wood
- any of a group of skin diseases characterized by the shedding of dry flakes of skin
- a similar skin disease of certain domestic animals
C17: via New Latin from Greek pituriasis scurfiness, from pituron bran
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- Any of various skin diseases of humans and animals, characterized by epidermal shedding of flaky scales.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.