Right Hand Thumb/Index/Middle Finger Pain & Tingling: Differential Diagnosis

Symptoms in thumb, index, middle, and radial half of ring finger suggest median nerve compression at the carpal tunnel.

Top Differential

1. Carpal tunnel syndrome (CTS) – nocturnal paresthesia, thenar wasting late. Tinel's/Phalen's at wrist.
2. C6 radiculopathy – neck pain, shoulder radiation, biceps reflex ↓, sensory thumb/index.
3. Pronator teres syndrome – median compression at elbow; pain with resisted pronation.
4. Trigger finger – locking at A1 pulpal; usually single digit.
5. Peripheral neuropathy – stocking-glove; diabetes, B12, alcohol.
6. De Quervain's – radial wrist pain (thumb extensors), Finkelstein +.

Workup

• Nerve conduction studies (gold standard for CTS).
• Cervical MRI if radiculopathy suspected.

Initial Management

• Wrist splint (neutral) at night.
• Activity modification, ergonomics.
• Corticosteroid injection (diagnostic/therapeutic).
• Surgery (carpal tunnel release) if refractory/severe.