الفهرس 
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Abstract
Scabies is a contagious skin infection caused by the penetration of the obligate human parasitic mite S. scabiei var hominis into the epidermis. Scabies remains one of the medicine’s most challenging problems for general practitioners and specialists alike. Scabies is typically described as an intense, intractable, generalized pruritus, worse at night, but occasionally, patients are asymptomatic. A spectrum of diseases are described ranging from the most commonly recognized ordinary scabies with an average infestation of 10–15 mites per person to a rare and severely debilitating form of the disease termed crusted (Norwegian) scabies, characterized by infestation of up to millions of mites and the development of hyperkeratotic skin crusts. Scabies is recognized as T-cell- mediated disease. Both CD4+ and CD8+ T cells are found within scabies lesion.
The aim of this study is to give an overview of the statistical study of scabies in dermatology outpatient clinic in Qwesna hospital.
The calculated sample from patients attending to dermatology outpatient clinic in qwesna hospital was three hundreds and seventy individuals. Patients were classified to two groups one having scabies and the other have other dermatological diseases as a control.
The frequency rate of scabies in dermatology outpatient clinic in Qwesna hospital was 7% and 93% with other dermatological diseases.
Scabies affects both sexes similarly, although there is some variability between studies.
This study confirmed the ages of scabietic patients was ranged from 30-49 years.
Scabies were more in houses with rooms less than four (96.3%) and family members with six members (44.4%)and crowding index less than two (55.6%).
Scabies was more frequent in patients with low socioeconomic standard (92.6%).
There was a statistically significant difference as regard SES between different studied groups (P.value >0.05).
Scabies was with sudden onset (66.7%), persistent course (88.9%) and of 1-3 duration (40.7%).
Scabies presented more with itching which increase at night (100%).
There was high rate with positive family history (14.8%).
Scabies most common presented clinically by scratch markings (70.4%) followed by vesicular lesion (22.2%) and macules (7.4%).
The most common site was hands &trunk (100%) followed by axilla (92.6%), genetalia (81.48%), buttocks (70.37%), feet &legs (66.7%), breast and head & neck(7.4%), 29.6% of scabetic patients presented with secondary infection.
There was a statistical significant as regard age, occupation, SES, course, duration of symptoms, associated conditons, family history of scabies , the type , extent and area of the lesion (P. value < 0.05).
There was no statistical significant difference as regard sex, family size, number of rooms, crowding index, onset of symptoms, distribution of the lesion and associated pathology (P. value > 0.05).
The course of symptoms, family history of scabies and extent of the lesion were significantly predictive for scabies as positive family history increase the risk of scabies 18 times more than those with negative family history.