pityriasis

noun

1. Pathology. any of various skin diseases marked by the shedding of branlike scales of epidermis.
2. Veterinary Pathology. a skin disease in various domestic animals marked by dry scales.

noun

1. any of a group of skin diseases characterized by the shedding of dry flakes of skin
2. a similar skin disease of certain domestic animals

n. pl. pit•y•ri•a•ses (-sēz′)

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