3. Scabies
Definition:
Infectious parasitic disease of the
skin caused by sarcoptes scabiei
Epidemiology:
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•
•
•
•
Epidemic every 10 years
Seasonal variations
Incidence in war time
Age factor
Promoting factors
5. 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.
6. 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
16. Scabies
Criteria for diagnosis:
Itchy skin eruption
Positive family history
Polymorphic skin eruption
Specific localizations
Hebra test
Probe test
Blood picture
18. Treatment of Scabies
General Measures:
The patient should avoid
contacts
Treatment of contacts is
essential
Systemic should be disinfected
Clothes Therapy:
Antihistamines
Antibiotics
Ivermectin
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).