This video explains how to manage an itchy and flaky scalp. Dr. Daniel Sugai, a board-certified dermatologist, discusses the spectrum of conditions from dandruff to scalp psoriasis, caused by the yeast Malassezia. He details various over-the-counter shampoos containing ingredients like pyrithione zinc, selenium sulfide, and salicylic acid, to treat these conditions. He also advises against using olive oil and sleeping with wet hair.
The video explains that dandruff is simply flaking of the scalp, seborrheic dermatitis involves itching, inflammation, and flaking, and psoriasis features thicker flaking that can spread beyond the scalp to other body parts, even affecting nails and potentially causing systemic inflammation, arthritis, and increased heart disease risk. The video describes them as existing on a spectrum.