pityriasis
noun
pit·y·ri·a·sis
ˌpi-ti-ˈrī-ə-səs 
: any of various skin conditions of humans or domestic animals marked by dry scaling patches of skin
Examples of pityriasis in a Sentence
Recent Examples on the Web
Several other skin conditions can cause similar-looking rashes, like Lyme disease, pityriasis rosea, psoriasis, and nummular eczema.
—
Sarah Bradley, Health, 3 Aug. 2024
Causes can range from somewhat harmless sun spots and milia to more serious pityriasis alba, vitiligo, and tinea versicolor that can cause major changes in skin color.
—Anna Giorgi, Verywell Health, 24 July 2024
Tinea versicolor, clinically known as pityriasis versicolor, is a fungal skin rash caused by an overgrowth of a certain yeast that is naturally present on your skin.
—Anna Giorgi, Verywell Health, 24 July 2024
What is pityriasis rosea?
—Lauren Caruso, Allure, 17 Aug. 2021
Shah says the large, scaly flakes from the videos could also be pityriasis amiantacea, which is a severe form of seborrheic dermatitis that is a result of psoriasis, eczema, or even a fungal infection.
—Jessica Cruel, Allure, 20 July 2018
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Sarah Bradley, Health, 3 Aug. 2024
Causes can range from somewhat harmless sun spots and milia to more serious pityriasis alba, vitiligo, and tinea versicolor that can cause major changes in skin color.
—Anna Giorgi, Verywell Health, 24 July 2024
Tinea versicolor, clinically known as pityriasis versicolor, is a fungal skin rash caused by an overgrowth of a certain yeast that is naturally present on your skin.
—Anna Giorgi, Verywell Health, 24 July 2024
What is pityriasis rosea?
—Lauren Caruso, Allure, 17 Aug. 2021
Shah says the large, scaly flakes from the videos could also be pityriasis amiantacea, which is a severe form of seborrheic dermatitis that is a result of psoriasis, eczema, or even a fungal infection.
—Jessica Cruel, Allure, 20 July 2018
Dictionary Entries Near pityriasis
Cite this Entry
“Pityriasis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pityriasis. Accessed 28 Nov. 2024.
Copy CitationMedical Definition
pityriasis
noun
pit·y·ri·a·sis
ˌpit-ə-ˈrī-ə-səs
plural pityriases
-ˌsēz
1
: any of several skin diseases marked by the formation and desquamation of fine scales
2
: a disease of domestic animals marked by dry epithelial scales or scurf due to alteration of the function of the sebaceous glands and possibly associated with digestive disorders
Love words? Need even more definitions?
Merriam-Webster unabridged
Share