Achilles tendinitis is a common injury that affects the Achilles tendon, which connects the calf muscles to the heel bone. This condition occurs when the tendon becomes inflamed, often due to overuse or repetitive strain from activities like running or jumping. Symptoms typically include pain and stiffness along the back of the heel, especially in the morning or after prolonged periods of inactivity. Treatment for Achilles tendinitis usually involves rest, ice, and stretching exercises to relieve pain and promote healing. In some cases, physical therapy or orthotic devices may be recommended to support the tendon and prevent further injury. With proper care, most people can recover fully and return to their regular activities.