I’m not sure I entirely trust your GP’s consclusions.
I have been diagnosed with foot drop by a neuro physio. However, I am confident I could resist someone trying to pull my foot down, so I don’t think it’s quite as clearcut as if you can do this, you can’t have foot drop. I can raise my foot/resist downward pull, by a conscious act of will - however, if I’m not consciously thinking about it (which you usually don’t, in everyday life), it will tend to drop of its own accord, and I will tend to walk by swivelling at the hip, instead of swinging my leg through.
It doesn’t hurt in itself, and I didn’t even know I had it, until the physio identified it. It’s not bad enough to make me trip, because I have been compensating with the hip rotation, without even realising - which, of course, is not OK, as it’s not the correct way to walk, and leads to other problems - but probably still beats falling over!
I do, however, have very tight calves - these are more painful than the foot drop itself, and were one of my earliest symptoms. In my 40s, I began to have unexpected muscle gain in my calves, which is most unusual for someone of that age, who has not done anything to promote it. I now know the muscle gain was due to spasticity, which meant I was getting a workout even when I was asleep, because my calves were getting continuous “contract” signals, but the “relax” signals were not getting through (this was due to one or more spinal cord lesions).
At the time, though, I was unaware of any disease that caused more pronounced musculature, and when I tried to explain to people (specifically family) that I was concerned, because it seemed odd, they thought I was mad, because they couldn’t understand anyone being worried about seeming muscular.
I tried to show Dad, but he said, exasperatedly: “But that’s just your muscle, Dear, isn’t it?”
I said: “Yes, but they never used to look like this!” My calves now look as if I play basketball or something. Aesthetically pleasing, but painful and useless. At least I now know I wasn’t mad to say: “This muscle tone is odd, and I’ve not been doing anything to encourage it!” Excessive muscle tone is the hallmark of spasticity.