Yes, I have been asked to strip for a neuro exam - it didn't really bother me too much because of the nature of my symptoms I felt I was being more carefully and thoroughly examined at that time, plus I liked the neuro so didn't see anything wrong in it.
I've also had to strip for a rheumatology exam too, but I think that's more common. I've had a few other procedures in recent years that have had me in several states of undress - I have no shame any more!
Maybe my doctors just like seeing me in my undies??
Thyroid disease, Vitamin D deficiency, hypermobility, 'ME/CFS', CCSVI (stenosis both sides and assymetric malformed valves), TMJ - No MS but many neuro symptoms.