Demodex Diagnosis & Testing

Demodex testing helps identify mite overgrowth and confirms the real cause of chronic skin irritation. Doctors may use skin scraping, lash sampling, dermoscopy, or biopsy depending on the symptoms and affected area. Many patients with rosacea, blepharitis, folliculitis, and recurring inflammation never receive proper testing. Without diagnosis, treatment often fails. This section explains how Demodex is diagnosed, how specimen collection works, how to read results, and when to speak with your doctor about testing options.