Sharon, have you had an injury to your foot
recently? When I broke my toe last year, I got the worst cramps
in my calf muscle.
I would definitely call the neurologist, as this is a neurological symptom. It usually means that there's some damage to the spinal cord.
I think they usually prescribe baclofen for spasticity and spasms. My neuro prescribed flexaril for me, which is a cheap muscle relaxer - it's mild enough that I can take one at work if I need it.