With air conditioning, pollution and unpredictable weather being part of daily life, nasal congestion is often brushed off as a minor nuisance. Yet sinusitis affects an estimated 12.8% of Malaysians, or nearly three million people, highlighting how common and overlooked the condition is.
Ear, nose, throat (ENT), head and neck specialists Dr Natasha Ayla Ahmad Zulkiflee and Dr Noor Liza Ishak warn that persistent symptoms may point to more serious underlying ENT conditions. Early assessment not only relieves discomfort but can also prevent chronic complications.
Not just a cold
Sinusitis occurs when the nasal cavities become inflamed and blocked with mucus, often owing to viruses, bacteria or allergies. According to Natasha, symptoms lasting beyond the usual duration of a cold should raise concern.
“If your nose feels constantly blocked for more than two to three weeks despite over-the-counter remedies, it is time to see a specialist. A typical viral infection clears within seven to 10 days; anything longer may signal sinus inflammation, allergies, or structural issues like a deviated septum,” she said.
Warning signs include persistent nasal blockage, mouth breathing, thick discoloured mucus, facial pressure and a reduced sense of smell. Frequent headaches, post-nasal drip, bad breath or snoring also warrant attention.
In children, chronic mouth breathing can affect jaw development, teeth condition, and sleep quality.
Environmental factors can make matters worse. Long hours in air-conditioned spaces and exposure to dust, haze and cigarette smoke, as well as poor hydration and irregular sleep, may aggravate nasal inflammation.
Chronic sinus problems can extend beyond discomfort: ongoing congestion may lead to fatigue and poor concentration due to disturbed sleep and reduced oxygen flow. In rare cases, untreated infections can spread to nearby structures such as the eyes, causing swelling or vision problems.
“While serious complications are uncommon, long-term congestion can quietly affect quality of life, from constant tiredness to reduced productivity,” Natasha added.
Why quick fixes are risky
Over-the-counter nasal sprays and antihistamines may offer temporary relief, but frequent use can mask underlying issues. Noor Liza warns that prolonged use of decongestant sprays can cause rebound congestion, where symptoms worsen once the medication wears off.
“Long-term use may irritate the nasal lining and cause chronic inflammation. Relying heavily on antihistamines can also mask symptoms without treating the root cause, delaying diagnosis of chronic sinusitis, nasal polyps or structural blockages,” she noted.
Excessive use of sprays could also lead to rhinitis medicamentosa, where the nasal lining becomes swollen and overly sensitive. In severe cases, persistent swelling can narrow the nasal passages and cause long-term blockage.
Decongestant sprays should generally be limited to three to five days. Anything beyond two to three weeks is a clear signal to seek professional evaluation.
How early treatment makes a difference
Seeing an ENT specialist early allows for targeted treatment based on the underlying cause, including saline rinses, nasal steroid sprays, allergy management, and short courses of antibiotics if infection is present.
For recurrent or chronic cases, procedures such as endoscopic sinus surgery, septoplasty or turbinoplasty can improve drainage and restore airflow. A nasal endoscopy can help identify inflammation, polyps or structural abnormalities that are not visible during routine examination.
“If we observe persistent obstruction caused by polyps, pus, enlarged turbinates or a deviated septum, that may signal the need for more intensive treatment,” Natasha said.
Allergy testing also plays a key role: strong reactions to triggers such as dust mites or pollen can confirm allergic rhinitis and guide targeted therapies, including immunotherapy and allergen avoidance.
Overall, early intervention can break the cycle of recurring congestion and reduce reliance on repeated medication. Recognising when a blocked nose is no longer occasional – and acting promptly – can prevent minor irritation from becoming a chronic problem.