SCABIES

INTRODUCTIONScabies is a skin infection which caused by infestation and sensitization of Sarcoptes scabiei var. homonis

EPIDEMIOLOGYAll ageAll racesAll socioeconomic groupMen = women

ETIOLOGYSarcoptes scabiei var. homonis

Life Cycle Of Sarcoptes scabiei

CLINICAL FINDINGSPrimary lesions:vesicle, papule, burrows

Secondary lesions:Usually caused by secondary infection or the result of scratching Excoriation, eczema, nodule, crust, hyperpigmentation post-inflammation

CLINICAL FINDINGSNocturnal pruriticFind the burrows on the skinFind the mites in the burrows

DISTRIBUTIONFinger websWristExtensor surfaces of the elbow and kneeSide of the hand and feetAxilarry areaButtocksWaist areaPenis and scrotumBreast

PREDILECTION OF SCABIES

CLINICAL FEATURESClassic scabiesSpecial form scabiesScabies on the child and infantNodular scabiesCrusted scabiesScabies incognito

Crust scabies on footexcoriate and papular scabies in male genitalia

scabies in an infant

Scabies on finger

DIAGNOSIS Cardinal signs:Nocturnal pruriticSpread in family members or groupFind the burrows on the skinFind the mites in the burrows

A typical linear burrow on the flexor forearm

ADDITIONAL EXAMINATIONSkin scrappingBurrow ink testTetracycline testSkin biopsy

DIFFERENTIAL DIAGNOSISAtopic dermatitisPyodermaPrurigoPsoriasis

TREATMENTPrinciple:Keep cleaning clothing, towel, bedlinens should be washed All member of affected household should receive treatment

TREATMENTTopical therapy:PermetrinLindaneSulfurBenzyl benzoat Systemic therapyIvermectin

PROGNOSISThe prognosis of this patient is good with correct treatment.

CONCLUSIONScabies is a transmissible ectoparasite skin infection characterizied by superficial burrow, intense pruritus and secondary infection. It give good prognosis by the correct treatment

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