Big Flakes on the Scalp: How to Respond

Their dimensions do not determine the diagnosis. The distribution, scalp colour, hair changes, itch and whether the scale is loose or stuck down provide more meaningful information.

Dandruff often presents with diffuse flaking. Seborrheic dermatitis may add greasy-looking scale and inflamed skin around oil-prone areas. Scalp psoriasis can produce thicker plaques, while scalp ringworm may present with scaling plus broken hairs, patchy loss or tender areas.

A new shampoo, dye or styling preparation can cause irritation that resembles a scalp disorder. Note where the flaking began and whether it followed product use, close contact with an affected person or sharing hair tools.

Use fingertips rather than nails to wash the scalp, rinse away residue and avoid very hot water. A medicated shampoo can be reasonable for dandruff-like flaking when used as labelled. Discontinue it and seek advice if it causes marked irritation.

Wash combs and brushes, and avoid sharing them if infection is a possibility. Resist scratching or prising off adherent scale; both can break the skin, obscure the original pattern and increase discomfort.

See a clinician for hair loss, snapped hairs, defined thick plaques, swollen glands, persistent tenderness, bleeding or flaking that resists appropriate shampoo care. Seek faster help if the scalp becomes boggy, drains pus, develops rapidly spreading redness, or is accompanied by fever or facial swelling.

Bring the names of treatments and hair products used, and mention similar skin or nail changes elsewhere. Ask what features separate dandruff, seborrheic dermatitis, psoriasis and fungal infection, and when the response to treatment should be reviewed.