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Pediatic

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  • It is part of using light as a method of treatment. Light can be used in:
    Phototherapy.
    (UVA or UVB).
    Photochemotherapy.
    (combination of psoralens & UVA).
    Photodaynamic therapy.
    (combination of photosensitizers + Visible light).
  • Transcript

    • 1. Pediatric Scabies By: Dr. Ashraf Hamza Professor of Dermatology & Venereology Alexandria University
    • 2. Scabies Definition: Infectious parasitic disease of the skin caused by sarcoptes scabiei Epidemiology: • • • • • Epidemic every 10 years Seasonal variations Incidence in war time Age factor Promoting factors
    • 3. Biology of Scarcoptes scabiei • • • • • • Skin specific parasite Morphology Male and female sizes Legs Speed of parasite Life cycle
    • 4. Scabies Mode of transmission: Direct contact: Direct contact with infected mother. To diagnose infantile scabies the mother should be scabetic. Indirect contact: Through bed sheets and clothes. This plays a minor role in the transmission of scabies in infants.
    • 5. Scabies Clinical Features: Complaint: •Itchy skin eruption. However, neonates do not itch but present with irritation •Causes of itching:  Paratsite act as F.B. in the skin Toxins released by mites Burrowing action of female mites Toxins released from dead mites
    • 6. Scabies Clinical Features: Distribution of lesions: • In Children • In the first year of life • In neonates
    • 7. Scabies Clinical Features: Morphology of lesions: Polymorphic skin eruption Tunnel or Burrow: Morphology of tunnel Why usually not seen?
    • 8. Scabies Clinical Features: Other lesions:  Papules  Nodules  Vesicles  Pustules & bullae  Crusts  Urticarial wheel  Scratch marks
    • 9. Scabies Complications: Secondary eczematization: It is a frequent complication Wide surface area is involved Features of eczematization Effect on child general condition
    • 10. Scabies Complications: Secondary infection: Precipitating factors Effect of pyoderma on mites Clinical types of infections Post Strept Glomerulonephritis: Secondary to bacterial infection Incidence
    • 11. Scabies Clinical Types: Crusted (Norwegian) Scabies: Precipitating factors Pruritus is minimal Number of mites Palms and soles Infectivity
    • 12. Scabies Clinical Types: Animal Scabies: Mode of transmission Biology of animal mite Course of the disease Distribution of lesions Clinical features Infectivity
    • 13. Scabies Clinical Types: Scabies Incognito: Definition Clinical features Infectivity Prolonged systemic steroids
    • 14. Scabies Clinical Types: Nodular Scabies: Pathogenesis Clinical features Histopathology Course
    • 15. Scabies Criteria for diagnosis: Itchy skin eruption Positive family history Polymorphic skin eruption Specific localizations Hebra test Probe test Blood picture
    • 16. Scabies Differential Diagnosis: From diseases characterized by itchy polymorphic skin eruption  Papular urticaria  Dermatitis herpetiformis  Chicken pox  Mastocytosis
    • 17. Treatment of Scabies General Measures:  The patient should avoid contacts  Treatment of contacts is essential Systemic should be disinfected  Clothes Therapy:  Antihistamines  Antibiotics  Ivermectin
    • 18. Treatment of Scabies Topical Antiscabetic Agents:      Sulphar 5% Permethrin 5% Gamma benzene hexachloride 1% Benzyl benzoate 30% Crotamiton
    • 19. Treatment of Scabies Rules in therapy:  Bathing is preferred  Sites of application  Frequency of applications  Irritant nature of drugs
    • 20. Treatment of Scabies Treatment of other clinical types:  Crusted scabies  Nodular scabies  Eczematized scabies
    • 21. Thank You