pityriasis ru·bra pi·lar·is | \ -ˈrü-brə-pi-ˈlar-əs 
\
\Medical Definition of pityriasis rubra pilaris
: a chronic dermatitis characterized by the formation of papular horny plugs in the hair follicles and pinkish macules which tend to spread and become scaly plaques
Comments on pityriasis rubra pilaris
What made you want to look up pityriasis rubra pilaris? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Musical Words Quiz
- Which word describes a musical performance marked by the absence of instrumental accompaniment?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Share pityriasis rubra pilaris