does anyone have fingers that suddenly curl up and hurts when you put them str8?

I had the middle finger on left hand clinch -- could straighten it out but sore so I was sent to a dr who gave me a shot (sorry I do not recall) --then another shot 4 months later and I have had no problems since ALSO I would like to comment on the Potassium I have never in the past 50 years had a "normal" reading of K - I am taking 2 x 600 mg dailty and I am still below what is normal - I have been taking potassium supplements for years does MG get rid of the K somehow?

I periodically have it with my left hand thumb. And, yes, it's quite painful straightening it out again and for it to function normally.

Not sure this is related, but I cramp in my fingers and toes. Occasionally a calf cramp and mid back. I'm gMG seropositive. I've dosed 5 60mg Mestinon a day. Given the nature of Mestinon in essence increasing the acetylcholine present in the neuro gap I mentioned this to my neurologist and he backed me down to 4 a day. Seems to have worked (much less events), but this dosing of medication is very delicate and like MG very individual based; check with your doctor. Just some food for thought.

This happens to my toes all the time and I agree...trying to straighten them out is super painful. As for my hands I had extreme wrist pain that would shoot to my thumbs. I ended up having double tendinitis in both hands which probably wasn't MG related. I hope you are able to go to the doctors to see if they can find the root of the problem. For me if I start having a toe/foot spasm I will drink some orange juice and or eat a banana. Sometimes spasm can also be related to dehydration and having some type of vitamin deficiencies. - Jazmin (MG team member)