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1 Common causes of heel pain include obesity, ill-fitting shoes, running and jumping on hard surfaces, abnormal walking style, injuries and certain diseases.  Plantar fasciitis is inflammation of the ligament that runs the length of the foot, commonly caused by overstretching.
It is caused by long-term strain on the plantar fascia and muscles of the foot, especially in obese people, runners or joggers. As in plantar fasciitis, shoes that are worn out, poorly fitting or poorly constructed can aggravate the problem. Heel spurs may not be the cause of heel pain even when seen on an X-ray.