Several times in the past month when i have been speaking, suddenly, i can't make any sound. it takes about a minute for me to get my voice back. wh?

Anticholinergic: Often the anxiety that goes with speaking triggers the autonomic nervous system to stop producing saliva which leads to a dry mouth and vocal cords. If you do not have a glass of water handy, the vocal cords can actually become tenacious and sticky , making it difficult to speak. Once saliva production begins again, you are able to talk again. Carry water to the podium !