What should you know about sudden dandruff?

Dandruff produces visible flakes from the scalp and may come with itching or mild redness. Changes in weather, sweat, washing habits, hats, hair products, or a new dye can make flaking more noticeable. Seborrheic Dermatitis can cause recurring flakes with greasy scale and redness around the scalp, hairline, eyebrows, ears, or sides of the nose. A very dry scalp may shed fine powdery flakes. Thick plaques, bleeding, broken hairs, or patchy hair loss suggest that another scalp condition may need examination. Flaky Scalp and Itchy Scalp describe the main symptoms, while the pattern and examination help identify the cause.

Wash regularly with lukewarm water and massage the scalp gently with fingertips rather than nails. Rinse styling products thoroughly and pause anything that burns or leaves a new rash. A clinician or pharmacist may suggest Medicated Shampoo Treatment; use its directions carefully and allow the product the recommended contact time. If inflammation or yeast-related overgrowth is suspected, Topical Antifungal Treatment may be considered after assessment. Do not scrape adherent scale, share combs, or apply oils that worsen greasiness or irritation.

Book a dermatology review if flaking persists despite appropriate shampoo use, keeps returning, or is accompanied by marked redness, pain, thick plaques, sores, pus, or hair loss. Seek prompt care for fever, rapidly spreading redness, or swelling around the eyes. A sudden change after hair dye or another product needs review if swelling, blistering, or facial symptoms develop.

Does the scale look dry, oily, or inflamed? Which shampoo or treatment suits my scalp? How long should I try it before review? Could a product or another scalp condition be contributing?