Hello, In the last year i occassionally will get like a nerve that pulls in my legs, mostly the right leg but can also happen to my left leg. It happens mostly at night but can happen even when sitting, also happened when swimming. My foot twists into a sideways position and the pain is excruciating. It usually lasts just a few minutes or can be very brief but I find i must stay still and wait for it to pass, any movement can worsen the problem. I just had blood tests done and all is normal. What can be the cause? Thank you for any help you can give me.