Differential Diagnosis for Pain on Outer Side of Foot Going into Heel and Up Back of Foot
- Single Most Likely Diagnosis
- Peroneal tendinitis: This condition is characterized by inflammation of the peroneal tendons, which run along the outer side of the foot and ankle. The pain pattern described matches the typical presentation of peroneal tendinitis, making it the most likely diagnosis.
- Other Likely Diagnoses
- Plantar fasciitis: Although plantar fasciitis typically presents with pain on the underside of the heel, some patients may experience pain that radiates up the back of the foot, making it a possible diagnosis.
- Achilles tendinitis: Inflammation of the Achilles tendon can cause pain in the back of the foot and ankle, which may radiate down to the outer side of the foot.
- Cuboid syndrome: This condition involves inflammation of the cuboid bone and surrounding tissues, leading to pain on the outer side of the foot that may radiate up the back of the foot.
- Do Not Miss Diagnoses
- Fracture: A fracture of the calcaneus, cuboid, or other bones in the foot could cause severe pain on the outer side of the foot and heel. Although less likely, missing a fracture could lead to serious complications.
- Infection: An infection such as osteomyelitis or septic arthritis could cause severe pain and swelling in the foot and ankle. Prompt diagnosis and treatment are crucial to prevent serious complications.
- Tumor: A tumor in the foot or ankle, such as a sarcoma, could cause pain and swelling. Although rare, missing a tumor could have serious consequences.
- Rare Diagnoses
- Tarsal coalition: An abnormal connection between two or more bones in the foot could cause pain on the outer side of the foot and heel.
- Sinus tarsi syndrome: Inflammation of the sinus tarsi, a small canal in the foot, could cause pain on the outer side of the foot and ankle.
- Peripheral nerve entrapment: Entrapment of the peroneal or sural nerve could cause pain and numbness on the outer side of the foot and ankle.