Why does allergic rhinitis cause blocked nose?

Breathing in pollen, dust-mite particles, animal dander, or mould can set off an immune response in the nose. Histamine and other inflammatory chemicals cause blood vessels in the nasal lining to enlarge. The lining becomes puffy and mucus production increases, which can create a blocked or stuffy sensation even when little mucus comes out.

Blocked Nose is a very common presentation of Allergic Rhinitis. It may alternate between nostrils and can become more noticeable at night when lying down. Nasal blockage has other causes too, such as a viral illness, sinus inflammation, structural narrowing, or medication effects.

Notice when congestion is worse to help identify a trigger. After outdoor exposure, showering or rinsing your face can remove pollen from skin and hair. Keeping bedrooms free of visible dust and avoiding smoke or strong fragrances may reduce nasal irritation.

Saline nasal rinses or sprays can wash away mucus and allergens. A pharmacist or clinician can advise on allergy treatments, including which nasal sprays suit your symptoms and how to use them correctly. Some decongestant sprays can cause rebound blockage when used repeatedly, so seek advice before relying on them.

Seek medical advice for persistent blockage on one side, nosebleeds that recur, facial swelling, severe facial pain, high fever, or a change in vision. Prompt review is also sensible if sleep, work, or exercise is regularly disrupted, if you develop wheeze or shortness of breath, or if pharmacy treatment has not helped.

Ask whether your pattern points to seasonal or indoor triggers, how to use a nasal spray so it reaches the lining properly, and whether your symptoms suggest another cause of obstruction. Bring a list of medicines and mention pregnancy, breastfeeding, asthma, or frequent sinus symptoms.