Itchy Scalp: What to Do

Loose flakes commonly occur with dandruff, while greasy scale and redness may suggest seborrheic dermatitis. Thick plaques can occur with scalp psoriasis. Tender bumps or drainage may indicate folliculitis, and nits or intense household-associated itch can point toward head lice.

A new dye, dry shampoo, gel, oil, or fragrance can irritate the scalp or trigger contact dermatitis. The appearance matters: itch with scale needs a different approach from itch with pustules, broken skin, or a spreading rash.

Rinse the scalp thoroughly, use lukewarm water, and choose a mild fragrance-free cleanser. Stop newly introduced products until the skin settles. Keep nails short, press or cool the area instead of scratching, and avoid picking flakes or bumps.

If a clinician recommends a medicated shampoo, follow its directions and allow the product the specified contact time. Do not share combs, brushes, hats, or pillows when lice are possible. A clinician can advise whether Head Lice Treatment or Medicated Shampoo Treatment fits the cause.

Arrange a dermatology visit for itch that lasts, keeps returning, disrupts sleep, or comes with hair loss. Seek prompt care for pus, marked pain, fever, rapidly spreading redness, facial swelling, or a bald patch with broken hairs. Urgent advice is appropriate if breathing difficulty follows a product exposure.

What does the scale or rash suggest? Could this be dandruff, seborrheic dermatitis, psoriasis, folliculitis, lice, or contact irritation? Which cleanser or treatment should I use, how long should I try it, and what sign means I should stop?