When I'm having a depressive episode I feel physically very uncomfortable when speaking, it feels unnatural and I get upset at whoever for talking to me and 'trapping' me in to having to reply. I can only really do one word answers other than "I'm fine, I just need to be alone" trying to explain the physical restriction to speaking that I'm experiencing would be very hard so I have to explain when I am feeling better.

My point is- maybe this is linked to depression?