Originally Posted by
Tom Campitelli
Plantar fasciitis is a bitch, but a more normal presentation is a gradual onset. This sounds like something more acute. Could be that you strained something.
If it is plantar fasciitis, its causes and cures are not well understood. I cannot say for sure what cured mine after having it for many months, but I suspect changing the shoes that I walked around in helped. I switched from some fancier leather shoes to Brooks running shoes.
If what you have resolves in a few days, then you don't have PF. If it is with you for a few weeks, my condolences. Try some cushier shoes for daily use.