Question: what are the causes of throat dryness?
Answer: Hayfever and other allergies. Share on Pinterest Potential causes of a dry throat include allergies, dehydration, and tonsillitis. ... 
Sleeping with the mouth open. ... 
Dehydration. ... 
Common cold. ... 
Flu. ... 
Mononucleosis. ... 
Acid reflux. ... 
Tonsillitis.