Differential Diagnosis for Right Foot Pain
The patient presents with a 2-week history of right foot pain that travels from the heel to the Achilles tendon. The following differential diagnoses are considered:
- Single most likely diagnosis
- Achilles Tendinitis: This is the most likely diagnosis given the location and nature of the pain. Achilles tendinitis is a common condition characterized by inflammation of the Achilles tendon, often caused by overuse or repetitive strain.
- Other Likely diagnoses
- Plantar Fasciitis: This condition is characterized by inflammation of the plantar fascia, a band of tissue that runs along the bottom of the foot. It can cause pain in the heel that radiates to the Achilles tendon.
- Achilles Tendinosis: This is a chronic condition characterized by degeneration of the Achilles tendon, often caused by repetitive strain or overuse.
- Retrocalcaneal Bursitis: This is an inflammatory condition that affects the bursa located between the Achilles tendon and the calcaneus (heel bone).
- Do Not Miss diagnoses
- Achilles Tendon Rupture: Although less likely, an Achilles tendon rupture is a serious condition that requires prompt medical attention. It is characterized by a sudden, severe pain in the Achilles tendon, often accompanied by a snapping or popping sound.
- Osteomyelitis: This is a bone infection that can cause pain, swelling, and redness in the affected area. Although rare, it is a potentially serious condition that requires prompt medical attention.
- Tumor (e.g., osteosarcoma): Although extremely rare, a tumor in the foot or ankle can cause pain and should not be missed.
- Rare diagnoses
- Haglund's Deformity: This is a rare condition characterized by a bony growth on the back of the heel bone, which can cause pain and inflammation in the Achilles tendon.
- Seronegative Spondyloarthropathy (e.g., ankylosing spondylitis, psoriatic arthritis): These are rare conditions that can cause foot pain, including pain in the Achilles tendon.