Oh boy do i know how this feels. I actually start pacing the room i get that irritated being around people physically (thank god i live alone) Im trying to just 'be' with being alone - i think having a distraction helps. Reading works wonders, once im committed to a task i have to finish it - i get annoyed if my mind starts to wonder whilst reading so i force myself to focus. Perhaps just being around people in short bursts would help? That way you get the comfort of being with them but not enough to start making you uncomfortable. I think for me this would probably make me want to be with them even more but it might be worth giving it a shot.