A torn tendon causes excruciating pain, according to eMedicineHealth. WebMD explains that a torn Achilles tendon causes a sharp pain along the back of the foot and above the heel, especially when a person stretches his ankle or stands on his toes. The most common areas of tendon rupture are the quadriceps, the Achilles tendon, the rotator cuff and the biceps.
In tendinitis, pain is typically mild and worsens gradually, explains WebMD. A tendon that is torn or ruptured causes abrupt and severe pain. Other symptoms associated with an Achilles tendon injury include swelling, stiffness, tenderness and a snapping or popping noise during the injury. When a tendon is completely torn, the common symptom is difficulty in flexing the foot or pointing the toes.
Minor to moderate tendon injuries tend to heal on their own. For a faster healing process, WebMD recommends that patients allow their legs to rest and use crutches when necessary. Icing the leg for up to 30 minutes every three to four hours for three days helps reduce pain and swelling. It also helps to compress and elevate the leg. Other advisable treatments include taking anti-inflammatory painkillers, using a heel lift, and practicing stretching and strengthening exercises recommended by a health care provider.