Causes of dry throat include allergies, breathing through the mouth, dehydration. dry air and exercise, according to Healthgrades. Additional causes include enlarged tonsils, side effects of medication, pollution and strep throat.
Dry throat is also caused by the use of tobacco or marijuana, straining the voice, vomiting, obstructive sleep apnea and excessive coughing. Depending on the underlying cause, a dry throat may be accompanied by other symptoms, states Healthgrades. If the dry throat is caused by a respiratory condition, additional symptoms often include a cough, difficulty breathing, sore throat and a hoarse voice.
Dry throat caused by an issue with the digestive system is often accompanied by vomiting, heartburn and trouble swallowing. Issues with the immune or circulatory system that are linked to dry throat also cause body aches, blurred vision, enlarged lymph nodes, fatigue and low blood pressure. Fever, chills and muscle weakness are other associated symptoms, adds Healthgrades.
Rare cases of esophagus or throat cancer are also linked to dry throat. Sometimes dry throat is an indication of a serious medical condition that requires prompt medical attention. If the dry throat is accompanied by a fever, pus or white patches on the tonsils or throat, get medical help immediately, instructs Healthgrades.