Gosh, sorry no one answered yet! So anxiety is super strange in how it can show up in someone. I wouldn't say it is common to have one sided facial tingling from it but hey, we are all different. I think what IS common though is feeling all sorts of sensations and making them into more than they usually are. Tingling is usually something to do with a nerve. In your face, this could be something related to your teeth, ear or sinuses. I see you are seeing a neurologist. That's a good plan. Stress can make EVERYTHING worse in my opinion. Since you are a chronic hyperventilator, do you suffer anxiety regularly or have a history of it at all?