Question: what does it mean when you have a lot of spit in your mouth?
Answer: Conditions that can cause saliva overproduction include: Rabies. Pellagra (niacin or Vitamin B3 deficiency) Gastroesophageal reflux disease, in such cases specifically called a water brash (a loosely defined layman term), and is characterized by a sour fluid or almost tasteless saliva in the mouth.