Foot swelling and pain for no apparent reason?

Sometimes: We can even twist our foot in bed or even unknowingly . Also varicose veins can cause it if you have deep ones, but you would usually have smaller ones on the surface. If both sides were swelling the causes would be more in number but much more limited since one sided.. Apply ice or heat and try Ibuprofen or aleve, (naproxen) limit salt and elevate the leg. An ace wrap might help too.

There is: always a reason….the trick is to find it….