Hi realizer. What you describe could be an over-sensitivity to others feelings and your own discomfort or an excessive amount of chatter in the mind.
Have you ever considered getting your condition checked by a psychologist that might be able to diagnose an underlying condition that may make your discomfort exaggerated.
If you want to explore this on your own, there are some surveys that show tendencies that may help show you possible underlying conditions.
Here is one but there are others
Psych Central - Anxiety Screening Quiz
If not a doctor or psychiatrist might be of assistance to help with medication to reduce the level of anxiety and make conversing more comfortable.