Itchy dry throat cough for a long time, mostly due to chronic pharyngitis, reflux pharyngitis, uvula overgrowth and other diseases.
1. Chronic pharyngitis: under the stimulation of acute pharyngitis repeated episodes and adverse physical and chemical factors, it is easy to lead to the pharyngeal mucosa and submucosal chronic inflammation. The pharyngeal sensory nerves are often in a hypersensitive state, and when inflammatory factors and external stimuli play a role, there can be a very long itchy dry cough in the throat.
2. Reflux laryngitis: gastric reflux to the throat, acid and protease stimulation corrosion damage to the mucous membrane of the pharynx, the local sensory nerve sensitivity increases in cold, hot air and inflammatory mediators provoke the occurrence of throat itching and dry cough for a long time under the symptoms of bad.
3. The uvula is too long: under the repeated stimulation of chronic inflammation in the upper respiratory tract, the uvula can be edematous, prolapse, growth, coarsening, and even fibrosis. When the uvula to the back wall of the pharynx dumping or adhesion in the root of the tongue, can be triggered by the throat itching dry cough for a long time.
When itchy throat and dry cough occur for a long time, need to actively seek medical treatment, systematic examination, clear diagnosis.