: any of various skin conditions of humans or domestic animals marked by dry scaling patches of skin
Example Sentences
Recent Examples on the WebShah 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 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 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 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 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 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 Claudia Sulewski 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, Teen Vogue, 23 July 2018 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 See More
Word History
Etymology
New Latin, from Greek, from pityron scurf
First Known Use
1684, in the meaning defined above
Medical 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