Achilles Tendonitis: Inflammation of the Achilles tendon, connecting the calf muscle mass on the heel bone, often a result of overuse. This results in pain and stiffness with the back with the heel, Primarily all through action. It is popular to rest with toes pointed down, which shortens the plantar fascia https://www.theorthopaedicandpainpractice.com/why-does-the-back-of-my-heel-hurt/