Plantar fasciitis is caused by straining the ligament that supports your arch. Repeated strain can cause tiny tears in the ligament. These can lead to pain and swelling
You have high arches or flat feet.
You are overweight.
You wear shoes that don't fit well or are worn out.
Most people with plantar fasciitis have pain when they take their first steps after they get out of bed or sit for a long time.