Hypophosphatemia Neuropathy

Diagnosis:

Clinical features of neuropathy plus phosphate deficiency and exclusion of other causes

Clinical features:

Acute, Sensorimotor, areflexia, dysarthria
Phostphate levels: <2.4 mg/dl

Findings on investigations:

NCS/EMG:

  • Demyelinating pattern (Prolonged distal latencies, reduced conduction velocities) [case report]
  • In some cases axonal pattern [case reports]
  • F-waves absent
  • Decreased recruitment (neurogenic recruitment)

Pathology/Nerve biopsy:

Sub-perineural edema, mild axonal atrophy
Response to phosphate supplementation

Treatment:

Phosphate supplementation

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