A common podiatric condition among middle-aged individuals and athletes, plantar fasciitis is caused by a strain in the ligament that connects the toes to the heel bone. Plantar fasciitis most often develops in those who are on their feet for long periods of time, have flat feet or high arches, have tightness in the Achilles tendon or calf muscles, or wear shoes that are worn out or do not fit well.
Individuals with this condition experience pain in their feet after they sit for a long period of time. They may also feel pain once they take their first few steps after they get out of bed or when climbing stairs. The discomfort may intensify as the day goes on.