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Peripheral nerve disorders

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Peripheral nerve disorders

Peripheral nerve disorders


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  • 1. PERIPHERAL NERVE DISORDER Sanil Varghese
  • 2. PERIPHERAL NEUROPATHIES • Is defined as alteration in function and structure of the motor, sensory or autonomic components of a peripheral nerve.
  • 3. CATEGORIES AND ETIOLOGIES OF PERIPHERAL NEUROPATHIES • • • • • • • • • • Metabolic or nutritional. Drug induced. Industrial or environmental toxins. Connective tissue processes or vasculitis. Infections or infectious processes. Inflammatory processes. Neoplasms. Trauma or compressions. Entrapment syndromes. Heriditory disorders.
  • 4. PATHOPHYSIOLOGY • • • • Wallerian degeneration. Axonal degeneration. Primary neuronal degeneration. Segmental demyelination.
  • 5. DISTRIBUTION PATTERNS OF PERIPHERAL NEUROPATHIES • Mononeuropathy simplex or mononeuropathy. • Mononeuropathy multiplex. • Polyneuropathy.
  • 6. CLINICAL MANIFESTATIONS • Pain, paresthesia, sensory loss, weakness, unstable balance. • Autonomic or trophic changes like cold, blue extremities, cutaneous hair loss, brittle finger or toenails. • Decrease or a loss of light touch and pinprick sensation. • Tingling, numbness, paraesthesia and disesthesia. • Neuropathic pain. • Deep tendon reflexes absent or decreased in affected muscels.
  • 7. MONONEUROPATHY Types • Carpal tunnel syndrome • Ulnar nerve palsy. • Radial nerve palsy. • Peroneal nerve palsy.
  • 8. TINEL’S SIGN
  • 9. PHALEN’S SIGN
  • 10. Ulnar nerve palsy
  • 11. MULTIPLE MONONEUROPATHY
  • 12. POLYNEUROPATHY
  • 13. DIABETIC NEUROPATHY