Dry and itchy throat may be dry air, chronic pharyngitis, diabetes, dry syndrome, reflux esophagitis and other reasons.
1. Dry air: long-term in the hot and high-temperature environment, the relative lack of air circulation, air humidity is low, resulting in water evaporation in the oral cavity and throat parts of the loss of water, so the throat will be dry and itchy, belonging to the physiological phenomenon.
2. Chronic pharyngitis: acute pharyngitis is not cured, chronic bacterial infection, repeated stimulation of various physical and chemical factors leading to chronic inflammatory lesions of the mucous membrane of the pharynx, appearing in the throat foreign body sensation, dry and itchy sensation, burning sensation and other symptoms.
3. Diabetes: when blood sugar rises above the renal glucose threshold, a large amount of glucose enters the urine, leading to osmotic diuresis and a large amount of water loss, so the throat will be dry and itchy, accompanied by symptoms such as polydipsia and polyphagia.
4. Dry syndrome: autoimmune system dysfunction produces antibodies that destroy the salivary glands, lacrimal glands and mucous glands, leading to a decrease in throat secretions, so the throat will be dry and itchy.
5. Reflux esophagitis: after the lower esophageal sphincter weakens the sphincter of gastric acid and other gastric contents, gastric acid refluxes into the throat through the esophagus, corroding and stimulating the local mucous membranes and dry, itchy throat and burning sensation.
Dry and itchy throat may be related to a variety of factors, it is recommended to consult a doctor to clarify the diagnosis and active treatment.