There's a constant urge to cough at the back of the nose where it connects to the throat.

　　In general, a persistent urge to cough at the area where the nasal passage connects to the throat may be caused by pathological factors such as acute pharyngitis, cough-variant asthma, or rhinitis. Specific analyses are as follows:

　　1. Acute Pharyngitis

　　Due to poor immune function in patients, exposure to cold air may lead to chilling. Stimulation from cold air can trigger severe coughing, accompanied by symptoms such as loss of appetite, burning sensation, roughness in the throat, and cough. Patients may take medications such as Qingre Sanjie Capsules, Compound Sarcandra Glabra Lozenges, or Gonglao Quhuo Capsules under medical guidance. If symptoms are severe, prompt hospital visit and examination are recommended for appropriate treatment.

　　2. Cough-Variant Asthma

　　This condition is usually associated with polygenic inherited traits within a patient's family and may be influenced by genetic or environmental factors. Patients often exhibit significant congestion of the pharyngeal mucosa and may experience sudden episodes of chest tightness, wheezing, shortness of breath, and coughing. Inhaling sharply or exposure to irritating environmental factors may trigger these symptoms. Patients may use medications such as budesonide inhalation aerosol or salmeterol xinafoate aerosol under medical supervision. Severe cases require timely hospital evaluation and targeted treatment.

　　3. Rhinitis

　　Rhinitis is typically caused by viral infection or seasonal factors leading to inflammation of the nasal mucosa. Common symptoms include nasal congestion, runny nose, and sneezing. During inhalation, nasal secretions may move closer to the nasopharynx, thereby triggering coughing. Treatment may include oxymetazoline hydrochloride nasal spray or Cang'ersi Rhinitis Capsules, used under a doctor’s guidance. If symptoms worsen, timely medical consultation and examination are necessary.

　　Besides the above three causes, other conditions such as allergic bronchitis, tonsillitis, or upper respiratory tract infections may also be responsible. It is recommended to seek medical attention promptly and receive symptomatic treatment under professional medical guidance.