What should you know about hard flaky skin on scalp?

Thick white or yellow scale with itch can occur with dandruff or seborrheic dermatitis. Well-defined, thicker plaques that extend beyond the hairline can occur with scalp psoriasis. A fungal scalp infection may cause scaling with broken hairs, tender areas, or patches of hair loss. Scratching can make flakes feel hard by forming crusts and can open the skin to infection. A close look at the scalp, hair, nails, and nearby skin helps a clinician separate these possibilities.

Wash gently with lukewarm water and avoid picking, scraping, tight headwear, and fragranced oils or styling products until the cause is clearer. A pharmacist or clinician may suggest a medicated shampoo; use it as directed and allow it to remain on the scalp for the recommended contact time. Do not share combs, brushes, hats, or towels if an infection is possible. Photograph the scalp before treatment so changes are easier to describe. Read more about [Flaky Scalp](/symptoms/scalp-flaking/) and [Medicated Shampoo Treatment](/treatments/medical-dermatology/medicated-shampoo-therapy/).

Arrange a dermatology assessment if scale persists despite gentle care, keeps returning, or is accompanied by pain, oozing, bleeding, swollen glands, or patchy hair loss. Seek prompt care for rapidly spreading redness, marked tenderness, fever, or pus. These features can signal inflammation or infection needing targeted treatment rather than more vigorous removal of the flakes.

Could this be [Dandruff](/conditions/dandruff/), [Scalp Psoriasis](/conditions/scalp-psoriasis/), [Scalp Ringworm](/conditions/scalp-ringworm/), or [Seborrheic Dermatitis](/conditions/seborrheic-dermatitis/)? Should my shampoo be changed? Do I need an examination of the hair or a sample from the scale?