A coma is not an absolute all-or-nothing state. There are various stages. His coma may be lightening a bit. It's not a dramatic breakthrough.

They wondered was I going to survive? Was I going to come out of the coma? In what state was I going to come out of the coma?

She's not in a coma or a vegetative state; she is responsive, cooperative and alert, and she is doing quite well,

I always talk about not tightening up, but lightening up in all areas.

It's very worrisome that he hasn't woken from his coma.

This almost certainly means there is swelling. If there was only a small bleed on its own, that wouldn't put the pressure up all that much. Very often you get fluid accumulating in the adjacent brain tissue and that can increase the pressure markedly.