What should you know about really dry flaky scalp?

Small dry flakes can follow cold, dry air, hot water, frequent washing or a harsh hair product. Dandruff and Seborrheic Dermatitis often cause recurring flaking with itch and sometimes greasy scale around the scalp, hairline, ears or eyebrows. Scalp Psoriasis can create thicker, sharply defined scale that extends beyond the hairline. Scalp Ringworm may cause scaling with broken hairs, tender areas or patches of hair loss and needs medical treatment.

Use lukewarm water and a gentle shampoo, rinse thoroughly and avoid scratching or picking scale. Stop a new dye, fragrance or styling product if burning or rash began after using it. A pharmacist or clinician can guide Medicated Shampoo Treatment when dandruff-type flaking persists; follow the product directions and allow contact time where specified. Do not share combs, hats or brushes if infection is suspected.

Seek prompt assessment for painful swelling, pus, crusting, fever, tender patches, broken hairs or noticeable hair loss. Make an appointment when flakes persist despite suitable shampoo, repeatedly return, spread onto the face or ears, or interfere with sleep. A clinician may need to distinguish dermatitis, psoriasis and infection because their treatments differ.

Does this look like Dandruff, Seborrheic Dermatitis, Scalp Psoriasis or Scalp Ringworm? Which Medicated Shampoo Treatment should I use, and for how long? Could a product reaction be involved? What changes in hair loss or tenderness should make me return sooner?