Insect bites and stings


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Insect bites and stings

  1. 1. Insect bites and stings Paleerat Jariyakanjana, MD Faculty of Medicine, Naresuan University 17 Jan 2013
  2. 2. Venomous Non-venomous•Bees •Mosquitoes•Wasps •Fleas•Hornets •Ticks•Yellow jackets •Lice•Fire ants •Scabies •Bed bugs •Caterpillars & moths
  3. 3. Venomous Non-venomous•sting •bites•bee, wasp •feed on your blood•defence mechanism •intense itching•injecting toxic andpainful venom
  4. 4. Signs and Symptoms Venomous Non-venomous•stinging sensation or •little more than papularpain rash•redness and swelling •small raised red spot•Itch: not concern •blister•anaphylaxis •open sore that may•rhabdomyolysis become infected •carriers or vectors of diseases
  5. 5. Management No specific antivenin Treatment: local wound care and general supportive measures venom apparatus  removed by scraping edge of scalpel blade parallel to skin and lifting apparatus away from skin
  6. 6. Management Ice bag wrapped in towel: reduce pain and swelling Oral antihistamine Anaphylaxis  adrenaline, H1- & H2- blocker, corticosteroids Tetanus toxoid: considered Antibiotic: controversial
  7. 7. Prevention
  8. 8. Prevention
  9. 9. PAEDERUS
  10. 10. Paederus dermatitis contact dermatitis characterized by a sudden onset of erythematobullous lesions on exposed areas of body does not bite or sting release paederin Characteristically lesions  linear  kissing lesion Scarring usually does not occur.
  11. 11. Paederus dermatitis
  12. 12. Treatment removing irritant by washing area with soap and water blistered site  cool wet soaks  topical steroid  considered oral antibiotic: prevent bacterial infection antihistamine
  13. 13. Prevention
  14. 14. Reference Tintinallis Emergency Medicine, 7th ed Rosen’s emergency medicine, 7th ed 25135/
  15. 15. ANY QUESTIONS?