Plantar fasciitis is the most common cause of heel pain.
Plantar fascia is the flat band of tissue (ligament) that connects your heel bone to your toes.. If you strain your plantar fascia, it gets weak, swollen, and inflamed. Then your heel or the bottom of your foot hurts when you stand or walk.
Pain when they take their first steps after they get out of bed or sit for a long time. less stiffness and pain after you take a few steps.