Your neuro probably won't perform these test, because they are not his area of specialty. I would ask your GP for a referral to a rheumatologist. That is one of the problems in battling autoimmune diseases. There is not 1 doctor to handle autoimmune diseases, you have to find the right specialist that the autoimmune disease falls under.

I believe the statistic is 60% of people with MG have multiple (2 or more) autoimmune diseases. MG is most common found with RA, lupus, thyroid. All of these can cause joint pain too.

Your rheumatologist would probably want to do an ANA, RA, thyroid levels, c reactive protein and sed rate, CBC (pernicious anmeia is often found too) as well as Vit D and B12, folate levels. These vitamin defiencies are often found with MG or have symptoms that resemble MG or make it worse.

The good news is that some of the treatment will help the multiple autoimmune disease like immunosuppresants.

good luck,
kathie