Yes. This is especially true if you choose to treat the symptoms instead of actually treating the root cause of your plantar fasciitis. (For example, your plantar fasciitis might actually be because of another foot condition which, left unattended to, will just continue to worsen over time.) It is always best to see a doctor and have them determine what exactly is causing your foot pain so that you can best pinpoint the method of treatment that will heal your feet fastest and the most effective.