Very Dry Itchy Scalp: What You Should Know

Flaking can follow dry air, frequent washing, hot water, or a reaction to hair dye and styling products. Dandruff and seborrheic dermatitis commonly present with scalp scale and itch, sometimes with greasy or irritated areas. Scalp psoriasis can present with thicker, more defined scale that extends beyond the hairline. Head lice commonly present with persistent itch and nits attached close to hair shafts. Folliculitis affects follicles and may cause tender bumps or pustules. Similar symptoms can have different causes.

Use lukewarm water and rinse shampoo thoroughly. Avoid scratching with fingernails, picking scale, or applying several new products at once. If flaking is recurrent, a medicated shampoo treatment may help when its active ingredient matches the cause; follow the label or clinician instructions and allow it to contact the scalp as directed. Do not use a lice treatment unless lice or nits have been identified. Pause a newly introduced dye or product if symptoms began soon afterward.

Seek a dermatology review for persistent itch, thick plaques, painful bumps, crusting, bleeding, patchy hair loss, or symptoms that keep returning. Arrange prompt care for spreading redness, swelling, pus, fever, severe tenderness, or a rapidly worsening rash. A clinician can inspect scale, follicles, and hair shafts and select treatment based on the pattern.

Does this look like dandruff, seborrheic dermatitis, psoriasis, lice, or folliculitis? Which shampoo is suitable and how should I use it? Could a hair product be triggering the itch? What should I do if I notice sores or hair loss?