Demodex Mites and Hair Loss: What to Know

Demodex are microscopic mites that can live around hair follicles and oil glands. A higher mite burden or an inflammatory reaction may cause itching, redness, scaling, tenderness or small follicle-centred bumps. Scratching and inflammation can increase shedding, yet these signs do not prove that mites caused the hair loss. Patterned thinning, sudden shedding, fungal infection, thyroid problems, nutritional issues, medication effects and autoimmune conditions can look similar.

A clinician may inspect the scalp and hair pattern, ask when shedding began, and look for broken hairs, scale or scarring. Testing may be considered when the appearance does not clearly identify the cause. Demodex-related facial irritation can overlap with rosacea; you can read about [Rosacea](/conditions/rosacea/).

Use a gentle cleanser, avoid picking or vigorous scratching, and pause irritating oils, fragranced products and harsh scalp treatments. Wash pillowcases, towels and hats regularly, and avoid sharing personal hair tools while symptoms are active. Take a clear photograph of the scalp if the appearance changes between appointments.

Arrange a dermatology assessment if shedding continues, patches appear, or the scalp becomes painful or scaly. Treatment depends on the confirmed cause; a clinician may discuss a prescription anti-mite or anti-inflammatory plan, and a suitable [Medicated Shampoo Treatment](/treatments/medical-dermatology/medicated-shampoo-therapy/) when appropriate.

Seek prompt medical care for rapidly expanding bald patches, smooth shiny areas, pus, marked swelling, fever, severe pain, or eye redness and irritation. These features may signal infection, scarring inflammation or eye involvement rather than a simple scalp irritation. New hair loss with weakness, weight change or other widespread symptoms also deserves assessment.

Could the hair loss pattern fit inflammation, infection, breakage or another condition? Do you see signs that make Demodex testing useful? Which scalp products should I stop, and how will we judge whether treatment is helping?