Late-stage novel coronavirus infection with nasal congestion but no runny nose

In general, nasal congestion without runny nose in the later stages of a novel coronavirus infection may be caused by environmental factors, allergen exposure, foreign body intrusion into the nasal cavity, nasal polyps, or the novel coronavirus infection itself. Patients are advised to follow medical instructions for symptomatic treatment. Specific analyses are as follows:

1. Environmental Factors

Exposure to, ingestion of, or inhalation of allergenic substances may trigger excessive immune responses, manifesting specifically as nasal congestion. Patients should clean their surrounding environment and maintain good hygiene.

2. Allergen Irritation

After a novel coronavirus infection, disinfection is often performed indoors. If patients are allergic to alcohol or "84 Disinfectant," they may easily develop symptoms such as nasal congestion and sneezing. Opening windows to ventilate indoor spaces can help. In more severe cases, oral antihistamines such as levocetirizine hydrochloride tablets or loratadine tablets may be taken under medical guidance.

3. Foreign Body in Nasal Cavity

Nasal congestion can also result from habits such as frequent nose-picking, which may damage the nasal mucosa. These adverse factors significantly contribute to nasal blockage. Patients can manage this under medical supervision using methods such as nasal irrigation or sterile cotton swabs.

4. Nasal Polyps

Nasal polyps are a common chronic condition affecting the mucous membranes of the nasal cavity and sinuses. They are clinically characterized by highly swollen nasal mucosa forming single or multiple polyps in the middle nasal passage. Symptoms may include nasal obstruction and reduced sense of smell. Treatment may involve medications such as mometasone furoate nasal spray or budesonide inhalation aerosol, used according to medical advice.

5. Novel Coronavirus Infection

If patients also experience fever, dry throat, or sore throat, nasal congestion may be due to the novel coronavirus irritating the nasal mucosa, leading to mucosal swelling. Patients can undergo a SARS-CoV-2 antigen test to confirm infection. If infection is confirmed, medications such as Nibi Shu capsule (nasal comfort tablets) or oxymetazoline hydrochloride nasal drops may be used as directed by a physician.

Besides the above, persistent nasal congestion without rhinorrhea in the later phase of a novel coronavirus infection could also be caused by nasal cysts. If patients experience discomfort, they should seek timely medical evaluation and targeted treatment to avoid delaying recovery.