Or a more scientific approach to why MG sometimes affects urination might help your doctor.

http://www.mayoclinic.org/healthy-li...s/art-20045283

The bladder muscles are smooth muscles, but they still need acetylcholine to function. MG affects skeletal muscles, which surround the bladder and sphincter.

A B12 deficiency or other nerve conditions can also affect bladder function.

And if you use any muscle more, the weaker it will get. Do doctors also swear to not use common sense while doctoring?

Annie