Hallmarks of a functional medicine approach include: 1  Patient-centered care. The focus of functional medicine is on patient-centered care, promoting health as a positive vitality, beyond just the absence of disease.  An integrative, science-based healthcare approach. Functional medicine practitioners look âupstreamâ to consider the complex web of interactions in the patientâs history, physiology, and lifestyle that can lead to illness.
By Mayo Clinic Staff. Achilles tendinitis is caused by repetitive or intense strain on the Achilles tendon, the band of tissue that connects your calf muscles to your heel bone. This tendon is used when you walk, run, jump or push up on your toes.
Conditions that may cause heel pain include: 1  When the tendon that connects the back of your leg to your heel becomes swollen and painful near the bottom of the foot. 2  Swelling of the fluid-filled sac (bursa) at the back of the heel bone under the Achilles tendon (bursitis)  Bone spurs in the heel.