Scabies Flashcards
Scabies A contagious parasitic infection of the skin caused by the mite _________________
Sarcoptes scabiei, var. hominis
Scabies is primarily transmitted by prolonged _____________
human-to-human direct skin contact
What Dx/Tx
(1) Rash appears 2-6 weeks after exposure.
(2) Intense pruritus that worsens at night is a cardinal feature.
(3) A burrow is the classic lesion; a linear, curved or S-shaped slightly elevated vesicle orpapule up to 1-2 mm wide.
-(a) Finger webs, wrists, sides of the hands and feet, the penis, buttocks and scrotum.
-(b) Burrows may obscured by scratching and secondary lesions.
-(c)Partners will also be symptomatic.
Scabies
Treatment
(1)Treatment is twofold:
-(a)Killing scabies mites & removing infestation
-(b)Controlling the dermatitis & pruritus, which can persist for months after effective eradication of the mites.
(2)Permethrin 5% or Lindane 1% applied to entire skin surface from the neck down, including under the fingernails and toenails an in the umbilicus.
(3) After 12 hours patient will bathe.
(4) Treatment regimen should be repeated in 1 week.
(5) Topical steroids may be used to control pruritus and inflammation after treatment with a scabicide.
(6) All clothes and bedding must be washed in hot water or put in a hot dryer at the time of application.
True/False
No need for fumigation or extermination of the house or berthing area because mites do not live long off of the human body.
True
Scabies
Head & neck are uncommonly affected, but if lesions are present here and require treatment, care should be taken to avoid the _____ and _______.
eyes and mouth
Labs/Studies/Imaging
Ink test:
–Rub a black felt-tip marker across an affected area. Remove excess ink is wiped away with an alcohol pad, burrow appears darker than the surrounding skin because of ink accumulation in the burrow.
Clothes be set aside wrapped in plastic bags for ___ days in order to kill the scabies.
14 days
