Or They could have seen Physicians for their pain and had been prescribed painkillers with prospective Uncomfortable side effects which built them experience uncomfortable. There will likely be pain from the Achilles tendon insertion in the calcaneus (heel bone) posteriorly (driving). The Achilles tendon could be thickened (swollen) and tight. https://www.theorthopaedicandpainpractice.com/why-does-the-back-of-my-heel-hurt/