The inability to feel mental pain.

A psychological condition where mental/psychological pain, suffering, or distress isn't felt. Related to analgesia and anhedonia. In the most extreme cases of amensgonia a person could be constantly happy or in a constant state of mental neutrality.
Ex. "Rachel is such a nice girl, but she hardly ever seems unhappy about anything."

"Well, she might have amensgonia, she might not feel any mental pain at all."
by HamptonIslands April 14, 2016
Get the Amensgonia mug.