Octopus bite

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Background

  • Blue-ringed octopus (genus Hapalochlaena) is commonly cited venomous octopus
    • Venom contains tetrodotoxin (Inhibits voltage-gated Na+ channels causing paralysis) and is potentially lethal
    • Becomes bright yellow with blue rings when provoked
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Blue ringed octopus

Clinical Features

  • Local erythema
  • Paresthesias
  • Flaccid paralysis
  • Respiratory Failure

Differential Diagnosis

Marine toxins and envenomations

Evaluation

  • Clinical diagnosis

Management

  • Supportive treatment only (no antivenom exists)

Disposition

See Also

External Links

References