Tickling and coughing in the throat after lying down may be due to chronic laryngitis, reflux pharyngitis, postnasal drip syndrome and so on. 1. Chronic pharyngolaryngitis: pain in the throat, itching, irritating dry cough, secretions that are not easy to cough up and other symptoms. 2. Reflux laryngitis: stomach contents reflux to the throat, stimulate the mucous membrane of the throat, the patient in the lying position will appear burning sensation in the throat, itchy throat, coughing, gastric reflux and other symptoms. 3. Postnasal drip syndrome: it refers to rhinitis, sinusitis patients with nasal inflammatory secretions flow back into the nasopharynx, oropharynx, hypopharynx, the pharyngeal mucosa caused by irritation, triggered by itchy throat, cough and other symptoms. After lying down, the secretion flows back into the pharynx and produces the symptom of throat itching and coughing. When patients experience discomfort, they should go to the hospital immediately for diagnosis and treatment.