Sandy, have you had your thyroid checked? Thyroid both hypo and hyper tend to run with MG and the conditions make each other worse.

I have autoimmune hashimotots hypothyroiditis and MG. One of the symptoms of hypothyroidism is tingling and numbness in the face particularly around the mouth and lips. I get this symptom a lot and it tends to happen more as the day wears on. If you haven't done so already, please ask them to check your thyroid hormones.

let us know how you do,
kathie