Updated 2026-09-29 · Educational only, not a diagnosis
Medical facts, drug details and treatment options on this page have not been independently medically reviewed.
What it is
A common inflammatory scalp condition causing greasy yellow flakes and redness, linked to Malassezia yeast. It rarely causes lasting hair loss but can worsen shedding.
Who gets it
Adults of all ages; flares with stress and cold weather.
Signs to look for
- Oily, yellowish flakes
- Itchy red patches on scalp, brows, sides of nose
Common causes and triggers
- Malassezia yeast
- Oil production
- Stress, climate
How it is diagnosed
- Clinical exam
Treatment and care options
These are the options commonly discussed. What suits you depends on your diagnosis — a dermatologist can help you choose.
- Ketoconazole, zinc pyrithione or selenium sulfide shampoos
- Prescription topicals for flares
Outlook
Chronic but very manageable.
When to see a doctor
If OTC shampoos don't help after a few weeks.
Not sure what's behind your thinning?
This content is for educational purposes only and is not medical advice. It is not intended to diagnose, treat, cure or prevent any disease. Speak with a qualified healthcare professional about your individual situation.