what are the causes of excessive saliva? This started about 3 months ago. When I lay down to sleep, the problem ceases, but after I wake and get up, throughout the day the problems increases.
As you can see in this article, there are numerous causes of excess saliva (hypersalivation) – http://www.healthhype.com/excessive-saliva-production-in-mouth-causes-of-excess-salivation.html
Without knowing your medical history, current health status and other personal medical information as well as concomitant signs and symptoms, it is difficult to say what may be causing this in your case. You should first consult with your family doctor who can examine you and probably run further tests before reaching a final diagnosis.
It is important to note that many people take hypersalivation as a minor ailment and do not seek medical treatment for it. As you would have seen in the article, hypersalivation may be a symptom of serious disorders so do not delay in seeking medical advice.