What Is Dandruff?
By Erin Archer Kelser, RNMedically Reviewed by Robert Jasmer, MD
Dandruff and seborrheic dermatitis are related problems with similar treatments.
Dandruff is a flaky, itchy scalp without signs of inflammation (such as redness or swelling).
When the condition also involves your face, eyebrows, ears, upper chest, or groin, it often has a red, flaky, crusty, or greasy appearance and it's called seborrheic dermatitis.
https://www.everydayhealth.com/dandruff/guide/
