Differential Diagnosis for Tenderness to Foot under Right 2nd Digit
Single Most Likely Diagnosis
- Morton's Neuroma: This condition is characterized by a benign growth of nerve tissue in the foot, commonly between the 2nd and 3rd toes, causing pain and tenderness. The location under the 2nd digit is a typical presentation for Morton's Neuroma.
Other Likely Diagnoses
- Stress Fracture: A fracture in one of the bones of the foot, often caused by overuse or repetitive stress, could lead to tenderness under the 2nd digit.
- Bursitis: Inflammation of the bursae (fluid-filled sacs) under the toes can cause pain and tenderness, especially if the bursa under the 2nd digit is affected.
- Gout or Pseudogout: These conditions involve the deposition of urate crystals (gout) or calcium pyrophosphate dihydrate crystals (pseudogout) within joints, leading to acute, severe pain and tenderness. Although less common in the toes other than the big toe, they can occur under any digit.
- Ingrown Toenail: An improperly growing toenail can cause pain, redness, and tenderness, especially if it affects the 2nd toe.
Do Not Miss Diagnoses
- Osteomyelitis: A bone infection that can cause pain and tenderness. Although less common, it's a serious condition that requires prompt treatment to avoid complications.
- Deep Vein Thrombosis (DVT): While DVT typically presents with swelling and pain in the calf, in rare cases, it can cause pain in the foot. Given the potential for severe consequences (pulmonary embolism), it's crucial not to miss this diagnosis.
- Cellulitis or Abscess: Bacterial infections of the skin and soft tissues can cause pain, redness, and tenderness. These conditions require antibiotic treatment and, in the case of an abscess, drainage.
Rare Diagnoses
- Erythromelalgia: A disorder characterized by burning pain, heat, and redness in the hands and feet. It's a rare condition but could potentially cause tenderness under the toes.
- Complex Regional Pain Syndrome (CRPS): A chronic pain condition that can cause severe pain, swelling, and changes in skin temperature and color. It's rare and typically follows an injury or trauma.
- Neoplastic Processes: Tumors, either benign or malignant, can cause pain and tenderness in the foot. These are rare but important to consider in the differential diagnosis to ensure timely and appropriate treatment.