A 30-year-old reader from TP HCM, Thanh Nhan, asks why nasal congestion worsens at night, leading to sleep disturbances and breathing difficulties, and seeks advice on how to alleviate these symptoms.

Untreated chronic sinusitis can cause nasal lining swelling, congestion, eye complications, and a significant decline in quality of life.

Sleeping positions can cause blood vessels in the nose to dilate and swell, while structural abnormalities in the nose and throat can obstruct airflow, leading to nasal congestion during sleep.

Tuan Minh, 29, never imagined a small, painless lump in his neck could completely alter his life.

Warm steam inhalation can alleviate symptoms of colds, sinus issues, and respiratory problems by thinning mucus and reducing nasal congestion.

I have chronic allergic rhinitis. Each time I sneeze, inhaling medicated oil helps, but is it good for long-term use? (Thu Nga, 28, TP HCM)

Nghiem Tran, 50, from Ho Chi Minh City, asks if recurrent sinusitis with nosebleeds in cold weather is dangerous and how it should be treated.