Pain behind the heel is frequently related to the Achilles tendon, specially to an inflammation of the area where the Achilles tendon connects towards the calcaneus. This is named retrocalcaneal bursitis. It really works by disrupting the myelin sheath from the nerve. Technically speaking, it creates gaps inside the plasma https://www.theorthopaedicandpainpractice.com/why-is-the-bottom-of-my-heel-painful/