What causes loss of smell in the nose?

In general, loss of smell is often associated with factors such as nasal trauma, upper respiratory tract infections, sinusitis, nasal polyps, and deviated nasal septum. Patients should promptly visit a正规 hospital to determine the underlying cause and receive targeted treatment. Specific analyses are as follows:

1. Nasal Trauma

Nasal trauma may directly damage the olfactory nerve or related structures, leading to loss of smell. For example, external forces from traffic accidents or falls may cause fractures of the cribriform plate, nasal bones, or septum, thereby injuring the olfactory nerves. In such cases, patients may use cold compresses under medical guidance to alleviate symptoms.

2. Upper Respiratory Tract Infection

Upper respiratory tract infections, caused by bacterial or viral infections, may affect the function of the olfactory epithelium or olfactory nerves, resulting in reduced or lost sense of smell. This type of smell loss is usually temporary and may gradually recover as the cold resolves. It is recommended that patients take medications such as acetaminophen tablets, ibuprofen tablets, or compound licorice tablets under medical supervision.

3. Sinusitis

Sinusitis refers to inflammation within the sinuses, which may lead to increased mucus production and nasal congestion, thereby affecting the sense of smell. The degree of smell loss due to sinusitis is typically related to the duration and severity of the inflammation. Patients may be prescribed medications such as Biyuan Tongqiao Granules, cefixime capsules, or Tongqiao Biyan Pills according to medical advice.

4. Nasal Polyps

Nasal polyps are benign growths in the nasal cavity that may obstruct airflow and impair the sense of smell. As polyps grow, the sense of smell may progressively decline until it is completely lost. Patients may undergo treatments such as endoscopic sinus surgery or open sinus surgery at a正规 hospital.

5. Deviated Nasal Septum

A deviated nasal septum occurs when the nasal septum bends to one or both sides, potentially causing abnormal nasal structure and impaired olfaction. It may also lead to symptoms such as nasal obstruction and headaches. Under medical guidance, patients may consider surgical options such as partial septectomy, three-line tension-reducing procedure, or septoplasty for correction.

In daily life, it is recommended to maintain a positive mindset, avoid spicy, stimulating, and greasy foods, get adequate rest, and develop healthy lifestyle habits.