I have a bad pain in the arch of my foot that goes up to my inner ankle. it is swollen and hurts to walk. i have had it for 3 months. what is it?

Plantar fasciitis : You may have torn your plantar fascia in the middle of your arch.This can be painful and last for months to years.See a foot specialist for a diagnosis.If this is what you have, certain sole inserts and supports, along with rest and lots of stretching can shorten the duration.

Most likely: It's the pt tendon and needs to be seen. Try rest, ice, compression and elevation until you see a podiatrist.

Foot pain...: With any strain or injury, it's very important to rest the affected foot. There may be a tendon or ligament tear or tendonitis and with any further exercise it could worsen. Have a specialist examine it for the best diagnosis and treatment plan.

Nerve squeeze...: I'm not real clear by "inner ankle" but it sounds like there may be involvement of the posterior tibial nerve in that area. This problem should be treated sooner than later. To remove all doubt, have your foot and ankle evaluated by a specialist familiar with nerve entrapments.