Welcome to another edition of Hello, Doctor — the TOI+ series that connects India’s leading specialists directly with our readers. Each week, subscribers write in with personal health questions, our editors curate the most relevant ones, and top clinicians respond with clear, evidence-based guidance written in simple, everyday language.
The purpose remains the same: to cut through the clutter of generic wellness tips and online misinformation, and instead connect readers with trusted, experienced voices. These are not abstract medical discussions — they are real questions from TOI+ subscribers, answered with clarity, context and care.
Why does nasal congestion get worse at night?
Many people experience worsening nasal congestion at night, and several factors contribute to this phenomenon. According to Dr. Meera Sharma, a senior pulmonologist at Max Hospital, New Delhi, gravity plays a major role. When you lie down, blood flow to the upper body increases, causing the blood vessels in the nasal passages to expand. This leads to increased swelling and mucus production, making it harder to breathe.
The role of allergies and irritants
Dr. Rajesh Kumar, an allergy specialist at Apollo Hospitals, explains that common allergens like dust mites, pet dander, and mold often accumulate in bedding. As you sleep, you inhale these particles for hours, triggering an immune response. This results in inflammation and congestion. Additionally, dry indoor air, especially from air conditioning or heating, can irritate nasal passages and dry out mucus, making it thicker and more difficult to drain.
Circadian rhythm and nasal congestion
Our body’s internal clock also influences nasal congestion. Dr. Anita Gupta, an ENT surgeon at Fortis Hospital, notes that levels of the hormone cortisol naturally drop at night. Cortisol has anti-inflammatory effects, so its decrease can lead to increased inflammation in the nasal passages. This is particularly noticeable in people with allergic rhinitis or sinusitis.
Tips to relieve nighttime nasal congestion
Doctors recommend several simple strategies to improve breathing at night:
- Elevate your head: Use an extra pillow or raise the head of your bed to help mucus drain more easily.
- Use a humidifier: Adding moisture to the air can soothe irritated nasal passages and thin mucus.
- Keep your bedroom clean: Wash bedding in hot water weekly, vacuum carpets, and keep pets out of the bedroom to reduce allergens.
- Try saline sprays or rinses: These can help flush out mucus and allergens, providing temporary relief.
- Avoid triggers: Limit exposure to smoke, strong perfumes, and other irritants before bedtime.
When to see a doctor
While occasional nighttime congestion is common, persistent symptoms may indicate an underlying condition such as chronic sinusitis, nasal polyps, or sleep apnea. Dr. Gupta advises seeking medical advice if congestion lasts more than two weeks, is accompanied by facial pain or fever, or significantly disrupts sleep.
Remember, this information is for educational purposes and does not replace professional medical advice. Always consult your healthcare provider for personalized guidance.
