Dandruff and hair loss: what to know

Loose flakes and mild shedding can occur together when an inflamed, itchy scalp is rubbed. Scratching can break fragile hairs near the surface, although dandruff itself does not explain every pattern of hair loss. Smooth round patches, a widening part, receding temples, or shedding that follows illness, major stress, weight change, or a new medicine suggest that a clinician should look for a separate explanation. Possibilities include alopecia areata, pattern hair loss, telogen effluvium, traction alopecia, or scalp ringworm.

Use a suitable anti-dandruff shampoo as directed, give it time on the scalp before rinsing, and avoid vigorous scratching. Keep hairstyles loose and pause tight extensions or repeated high-tension styling while shedding is active. Photograph the parting or affected areas in consistent lighting so change is easier to describe. A clinician can examine the scalp, review recent triggers, and decide whether testing or hair-loss treatment is appropriate.

Arrange a dermatology assessment if hair loss is sudden, clearly patchy, rapidly worsening, or accompanied by scalp pain, pus, broken hairs, marked redness, or tender swelling. Seek prompt advice when a child has scaling with broken hairs or a bald area, because scalp infections need specific treatment. Persistent flaking despite careful shampoo use also deserves review.

Ask whether the pattern looks like irritation-related breakage, shedding, or follicle loss; whether your scalp needs examination for infection; and which shampoo or treatment fits your hair type and other medicines.