What Causes Slightly Excessive Saliva, Mild Speech Difficulty, Throat Rawness, And Occasional Chest Tightness, With A History Of Bruxism?

Symptoms:
slight excess of saliva when speaking
slight difficulty at times in pronouncing words
rawness in throat
slight feeling of constriction in chest at times
I have nighttime bruxism
I had one brief suspected TIA 3 years ago - blurry spot in vision for 45 minutes
I am an extremely fit 74-year-old male