I've had PF twice in the past 5 years - haven't had it for over a year now so fingers crossed its gone for good!!!
I put it down to wearing flip flops for a fortnight on holiday... The first time I had it, it was so intense that i had to have v strong pain killers, physio and finally the dreaded steriod injection (omg it hurt worse than the PF) before it went away.
Second time round I did the physio at home and my GP referred me to orthopedics who supplied me with gel inserts for my shoes. I now stick to boots rather than shoes, and won't wear anything less than a 1inch heel. I do get painful cramps in my feet, particulary at night, but thankfully the PFs not come back yet!