Puss Caterpillar Envenomation

Epidemiology

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Puss Caterpillar Characteristics

  • Megalopyge Opercularis
    • Names for Adult Form
      • Southern flannel moth
    • Names for Larval Form
      • Puss moth
      • Tree asp
      • Asp caterpillar
      • Trump caterpillar

Appearance

  • Resembles a Tiny Persian Cat: thus, the name “puss”
    • Fur of the Larva Contains Venomous Spines: cause extreme pain on contact with human skin

Physiology

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Clinical Manifestations

Reaction at Contact Site

  • Extreme Pain at Site of Skin Contact with Venous Spines on the Caterpillar
  • Rash/Blisters
  • Sweating from Welts/Hives at Site of Sting: common

Allergic/Immunologic/Dermatologic Manifestations

  • Anaphylaxis (see Anaphylaxis, [[Anaphylaxis]]): may induce an anaphylaxis-like reaction (unknown if IgE-mediated)
  • Angioedema (see Angioedema, [[Angioedema]]): may induce an anaphylaxis-like reaction (unknown if IgE-mediated)
  • Urticaria (see Urticaria, [[Urticaria]]): may induce an anaphylaxis-like reaction (unknown if IgE-mediated)

Cardiovascular Manifestations

Gastrointestinal Manifestations

Neurologic Manifestations

  • Headache (see Headache, [[Headache]])
  • Numbness
  • Parasthesias Radiating Up the Affected Limb (see Parasthesias, [[Parasthesias]]): with burning and/or edema

Pulmonary Manifestations

Other Manifestations

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Treatment

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References

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