had it for years, plus arthritis, plus bunions, plus very wide feet. And yes, I get sharp pain in the balls of my feet plus stabbing pains in my toes, Nothing to do with the heel.
As I understand it PF is a thinning of the flesh under your feet and there is nothing you can do about it,
Learned that I could only wear backless shoes.
There are two companies I use - 'Fit -Flop', which are very expensive but fantastic, and 'Fly - Flot ( very easy to get confused) which aren't cheap but less expensive and are very good too.
Other people recommend Hotter.
All of these are online and will send catalogues. Didn't want to buy shoes online but have found that it's fairly painless to send back the ones that aren't suitable.
Good luck
PS Sometimes I get a really bad dose of pain to the extent I can barely walk and the docs think that might be gout - have Naproxen available for such occasions.