Add Yahoo as a preferred source to see more of our stories on Google. Image Credit: Shutterstock. Does your brain shut down, and your tongue become heavy when you need to start a conversation?

Lethologica: inability to recall words while speaking. Caused by memory delays, stress, or mental fatigue Lethologica is pronounced leh-thuh-LOJ-ih-kuh. Did our AI summary help? Ever been in the ...