Dandruff is common and can make the scalp feel dry and itchy. But an itchy scalp together with hair loss is not automatically dandruff. Different scalp conditions can cause itching or flaking, and some inflammatory conditions can affect the hair follicles themselves.
Notice the pattern, not just the flakes
The NHS describes dandruff as flakes on the scalp and hair, sometimes with itch. It advises seeking a GP review if symptoms persist after four weeks of anti-dandruff shampoo, if the scalp is very itchy, red or swollen, or if symptoms are painful. A clinician can check whether another skin condition may be involved.
One less common example is lichen planopilaris, a scarring hair-loss condition described by the British Association of Dermatologists. It can cause an itchy, painful, burning or tender scalp, with areas of loss or scarring. This is not something that can be diagnosed from a photograph or a symptom checklist, but persistent inflammation or loss around the same area deserves an assessment because scarring can permanently damage follicles.
When to seek advice
- Arrange a GP appointment if the itch is severe or persistent, the scalp is red or swollen, or hair loss is continuing.
- Ask for advice sooner if you have burning, tenderness, pain, new patches of loss, or areas where the scalp looks smooth or shiny.
- Tell the clinician about new hair products, medicines, recent illness and when the symptoms began.
For mild dandruff without other concerning symptoms, the NHS suggests trying an anti-dandruff shampoo and following its instructions. Avoid assuming that shampoo will address a separate cause of hair loss, and do not put prescription creams or treatments on the scalp unless they have been recommended for you.
This guide cannot identify the cause of your symptoms. A clinician can examine the scalp and decide whether the issue is dandruff, another skin condition, a hair-loss disorder, or more than one thing at once.