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Derm Micro - Chapter 86
Terms in this set (19)
What is the geographic distribution of black widow?
wood and brush piles; southern US
What are the Sx of a black widow spider bite?
sharp pain but no immediate swelling --> redness and burning --> muscle cramps, spasms, visuals difficulties w/in an hour (resolve w/in 48 hours)
What is the geographic distribution of brown recluse spiders?
wood and brush piles; southern and central US
What are the Sx of a brown recluse spider bite?
painless initially --> itching and swelling --> vesicle or bleb --> w/in 3-4 days bleb sloughs and ulcerates w/ radiating necrosis
When do patient siwht scabies experiences their 1st symptoms?
w/in weeks to months after exposure
What is the incubation period in a person sensitized by prior exposure?
What type of hypersensitivity in scabies?
What is the epidemiology of scabies?
mite transmitted through direct contact; cosmopolitan in distribution
What are the Sx of scabies?
intense itch in interdigital folds, butt, genitalia, wrists, and elbows; short slightly raised burrows
How do you Dx scabies?
lesion and seeing mite on skin scraping
How do you Tx scabies?
1% gamma benze hexachloride (lindane) in lotion; 1-2 applications each week
What is the epidemiology of lice?
school kids hair; body louse on clothes; crab louse live around hair
What are Sx of lice?
intense itching around hairy areas
How do you Dx lice?
see lice or eggs
How do you Tx lice?
gamma benze hexachloride (lindane) lotion applied to entire body and left on for 24 hours; shave hair out
What is the epidemiology of bedbugs?
live in bed; bedbugs and triatomid bugs (spread Chagas' disease)
What are Sx of bedbugs?
small red lesion to hemorrhagic bullae; bite in a linear fashion; triatomid bugs bite the face
How do you Dx bedbugs?
clinical manifestations and blood on sheets and bugs in bed
How do you Tx bedbugs?
topical relief of pruritus and antihistamines; take a bath
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