Sometimes usually when I am tired but sometimes at other times I involuntary take short deep breath. Just one at a time. I asked my neurologist and she said it was either fatigue or anxiety (can't remember which) but I don't suffer from fatigue, I need to manage my energy but it's not fatigue and my anxiety is manageable and generally present more like anger or ocd. Plus I have a brain stem lesion so I'm wondering if anyone else experiences this?