House Dust Mite and Allergic Conjunctivitis: What to Do About Itchy, Red, Watery Eyes

Common symptoms

Both eyes itch at the same time, turn red and water, with a feeling that something is in them. This often happens together with sneezing and a runny nose. Compared with infectious conjunctivitis, the discharge in allergic conjunctivitis is usually clear and watery, and it often comes back in certain places or seasons. For example, after making the bed, after going into a room with carpet, or at night while sleeping.

Why you should not rub

Rubbing your eyes makes mast cells release more inflammatory substances, so the more you rub, the itchier they get. It can also scratch the cornea and bring in bacteria. Safer steps are to apply a cold compress, rinse the surface of the eye with artificial tears, and get away from the suspected trigger as soon as possible. If you wear contact lenses, it is best to stop wearing them during a flare-up, and to replace both the lenses and the lens case to avoid repeated irritation.

How to think about long-term management

First, control the environment: wash bedding at a high temperature, keep humidity down, reduce the build-up of fabrics, and avoid dust-raising cleaning. Second, get proper care: if symptoms keep coming back or clearly affect your life, see an eye department or allergy department for assessment, so a doctor can choose suitable eye drops and a combined plan. Third, keep a record: write down when symptoms start and what the environment was like at the time. This helps find the real trigger. If you have obvious eye pain, reduced vision, or a lot of pus-like discharge, see a doctor as soon as possible.

This article is for general information only and is not medical advice. Please follow your doctor's instructions.