Hi. It could be due to plantar fasciitis.. Plantar fasciitis is one of the most common causes of heel pain. It involves pain and inflammation of a thick band of tissue, called the plantar fascia, that runs across the bottom of your foot and connects your heel bone to your toes... Most people who have plantar fasciitis recover with conservative treatments in just a few months... Injecting a type of steroid medication into the tender area can provide temporary pain relief.. A physical therapist can instruct you in a series of exercises to stretch the plantar fascia and Achilles tendon and to strengthen lower leg muscles, which stabilize your ankle and heel... Few people need surgery to detach the plantar fascia from the heel bone. It's generally an option only when the pain is severe and all else fails....