I occasionally experience sudden, unexpected episodes of excess salivation, each of which lasts about five minutes and is accompanied by nausea, tingling in the cheeks and lymph node areas, and occasionally chills. I swallow or spit the excess saliva every ten or so seconds, each of which I would say amounts to about a teaspoon. After the episode I feel fine, albeit a little sweaty and uneasy. I have no idea what brings this on, but it usually happens outside with no warning.