What happens if house dust mite allergy is not treated?

House dust mites live in indoor dust, especially in bedding, mattresses, carpets and upholstered furniture. In a sensitive person, proteins from the mites can trigger inflammation rather than an infection. Continued exposure may cause sneezing, a runny nose, itchy eyes or an itchy throat, with congestion that disrupts sleep and concentration. Allergy-related inflammation can also aggravate asthma in people who have it, leading to cough, wheeze or chest tightness. These symptoms can have other causes, so an assessment may be useful.

Consider an allergy assessment if symptoms recur indoors, are strongest in the bedroom, or continue despite simple measures. Wash bedding regularly according to its care instructions, reduce dust-collecting furnishings where practical, and use suitable covers for mattresses and pillows. A clinician may recommend allergy medication or a tailored plan after reviewing your symptoms. Do not stop prescribed asthma treatment without advice.

Get emergency help for severe breathlessness, blue or grey lips, difficulty speaking because of breathing, or rapidly worsening wheeze. Arrange prompt medical review for night-time breathing symptoms, repeated chest tightness, or a cough that keeps returning. Persistent nasal blockage with facial pain, fever or one-sided discharge also deserves assessment because it may reflect another problem.

Ask whether your symptoms suggest house dust mite allergy, whether allergy testing could help, and which cleaning measures are worthwhile in your home. If you have asthma, ask how indoor triggers may affect your inhaler plan.