Nasal congestion due to allergies: what to know

Pollen, mould, animal dander, or household dust mites can trigger allergic rhinitis. The nose becomes inflamed and produces more mucus, making breathing through it difficult. Symptoms may come and go with exposure and usually do not behave like a short-lived cold. House dust mite allergy can be more noticeable indoors or around bedding. A blocked nose can also occur with sinusitis or chronic sinusitis, so facial pressure, reduced smell, or thick discharge deserves attention.

Reduce contact with the suspected trigger where practical: keep bedroom fabrics clean, improve ventilation, and avoid smoke or strong fragrances. Saline nasal spray or a gentle rinse can loosen mucus; use sterile, distilled, or previously boiled and cooled water for a rinse. A pharmacist or clinician can advise whether allergy medication, such as a suitable antihistamine or nasal spray, fits your health needs. Use nasal sprays exactly as directed, because some decongestant sprays can worsen blockage when used too long.

Arrange a medical review if congestion keeps returning, disrupts sleep, affects smell, or does not settle after trigger avoidance. Seek urgent help for swelling of the lips or tongue, wheezing, severe breathing difficulty, or faintness. Fever with severe facial pain, swelling around an eye, a severe headache, or worsening illness also needs prompt assessment.

Could this be allergic rhinitis, sinusitis, or another cause? Which trigger-control steps are realistic for my home? Is a nasal spray or allergy medicine suitable with my other conditions and medicines? How long should I try it before returning?