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Myiasis by aseem
Myiasis by aseem
Myiasis by aseem
Myiasis by aseem
Myiasis by aseem
Myiasis by aseem
Myiasis by aseem
Myiasis by aseem
Myiasis by aseem
Myiasis by aseem
Myiasis by aseem
Myiasis by aseem
Myiasis by aseem
Myiasis by aseem
Myiasis by aseem
Myiasis by aseem
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Myiasis by aseem

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Transcript

  • 1. MYIASIS Syn : Blow/Bot/Fly-Strike
  • 2. Introduction • Gk : “Muia” – Fly ; Scot: ‘Boateig’ – Maggot ; Blow – to deposit ; Screw – spinous horny projections • infestation of body tissues of humans and animals by the larvae (maggots) of Diptera – Frederich William Hope (1840) • 02 groups (based on Myasis-causation) : Obligatory (Larval Stage in Mammalian body) Facultative (Decaying flesh, Wound)
  • 3. Clinical classification (ICD-10) • DERMAL / SUB-DERMAL • CUTANEOUS – Creeping – Furuncular – Traumatic • • • • • NASOPHARYNGEAL OPHTHALMOMYIASIS AURICULAR INTESTINAL UROGENITAL
  • 4. ETIOLOGY Muscidae (Wound Myiasis / Accidental) -Musca domestica (Housefly) -Fannia canicularis (lesser / latrine housefly) Calliphoridae (blowflies – Metallic / Non-metallic) • • • • • • • Cochliomyia (NW Screwworm) Chrysomyia (OW Screwworm) Cordylobia (Tumbu fly / Sahara fly) Auchmeromyia (Senegal Sucker/Congo floor m.) Calliphora (Bluebottle) Lucilia (Phaenicia) (Greenbottle) MDT (Serricata) Phormia (Black blowfish)
  • 5. Sarcophagidae: (Flesh flies) -Sarcophaga -Wohlfahrtia Oestridae -Dermatobia (human botfly) FM -Gasterophilus (horse botfly) GI -Oestrus (Sheep nostril fly) NP -Hypoderma (Warble heel fly) ?HES Cuterebra (Rabbit-rodent botfly)
  • 6. • aa
  • 7. CLINICAL FEATURES FACULTATIVE / TRAUMATIC WOUND MYIASIS Eggs / Larvae in suppurating tissues Calliphora, Lucilia, Phormia, Sarcophaga OBLIGATORY CUTANEOUS MYIAISIS CREEPING ERUPTIONS FURUNCULAR MYIASIS Cordylobia, Cochliomyia, Dermatobia, Hypoderma, Gastrophilus, Oestrus assoc with HES / Constt symptoms ; Exposed areas
  • 8. Traumatic Myiasis • aa
  • 9. Furuncular Myiasis Insiduous, tender boils central punctum Serosanguinous discharge posterior end of the larva, Spiracles visible in punctum Lymphangitis , regional LAN Rapid resolution on removal of larva
  • 10. Creeping Eruptions Resembles cutaneous larva migrans tortuous, thread-like red line with terminal vesicle marks the passage of the larva
  • 11. • aa
  • 12. • aa
  • 13. TREATMENT Wound myiasis debridement and irrigation (Chloroform, Turpentine guaze, Ether, Paraffin, Eusol) treatment of secondary infections Mechanical Forceps Extraction
  • 14. Furuncular myiasis traditional methods: pork fat, mineral oil, petrolatum, butter, beeswax, cigarette ash, chewing gum surgical (I & D  Extraction) Creeping Eruptions Extraction beyond the vesicle Ethyl Chloride freeze Ivermectin 12mg PO stat ; Albendazole 400mg
  • 15. THANK YOU

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