Wild_Cat, It's not hyperactivity but HYPOactivity. The numbness and tingling could be not enough oxygen getting to your tissues. "Under breathing" is the inability to take a breathe in. That's classic MG. Being unable to breathe and get oxygen can cause agitation. Other things like low calcium (see my post to you) can cause muscle twitching. Low sodium can cause agitation. You need a real DOCTOR!!!

If you feel like this again, you need to be in an ER.

Annie