Difference between revisions of "Octopus bite"

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Revision as of 07:20, 24 July 2016


  • 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
Blue ringed octopus

Clinical Features

  • Local erythema
  • Paresthesias
  • Flaccid paralysis
  • Respiratory Failure

Differential Diagnosis

Marine toxins and envenomations


  • Clinical diagnosis


  • Supportive treatment only (no antivenom exists)


See Also

External Links