Distal median nerve dysfunction

Alternative names:

neuropathy - distal median nerve

Symptoms:

• sensation changes of the first 3 fingers
  • numbness, decreased sensation
  • tingling, burning sensation
  • pain (may be severe)
  • abnormal sensations

• weakness of the hand
  • weak grip
  • difficulty grasping objects

Signs and tests:

Neuromuscular examination of the hand and wrist indicates distal median nerve dysfunction. There may be decreased sensation in the thumb side (radial) fingers. There may be weakness of the thumb and difficulty with opposition of the thumb and little finger. A detailed history may be needed to determine the possible cause of the neuropathy.

Tests that reveal distal median nerve dysfunction may include:

• An EMG (a recording of electrical activity in muscles)
• nerve conduction tests
• a nerve biopsy (rarely needed)

Tests are guided by the suspected cause of the dysfunction as suggested by the history, symptoms presented, and pattern of symptom development. They may include various blood tests, X-rays, scans, or other tests and procedures.