Flashcards in Parasitic Infestations Deck (19):
Infestation of larval form of trombiculid mites- found in humid environments. Create feeding tube, do not burrow
Cutaneous inflammation, intense pruitis, grouped papules & papulovesicles on legs, waistline and skin folds
1-2 week symptoms. Calamine, topical steroids, hydroxyzine or benedryl to aid sleep.
Tuck pants in socks, wear repellant, soap & water will displace
Obligate human parasite. 15-20 minutes of direct skin contact. Common to webbing of hands and skin folds
Generalized pruetic rash- more intense at night. Face & neck unaffected. Lesions can be wide variety of shapes. Burrow!
Visulization of mites, eggs of feces- skin scraping with mineral oil.
Permetherin 5% cream. Tx all household members & sex contacts. Wash bedding, clothes & towels in hot water and dryer or leave in plastic bag for 72 hrs
Louse infestation- vary by body part they infest
Pruitis- delayed hypersensitivity reaction. Excoriations and secondary cellulitis.
Live louse- Nits do not indicate active infestation. Common behind back of neck & ears
1% permeterin cream- wash off for 10 min, repeat 7 days later. Disinfect clothing for body lice
Head- examine and treat household members
Pubic- examine and treat- screen for STDs
Cimex lectularis- not implicated in spread of disease. Favor dark crevices. Can survive months without feeding
Pruetic marculopapules in clusters or lines in unclothed areas. Dx with clinical characteristics of bite
Symptomatic treatment of bites. . Contact pest control, wrap mattress in plastic bags, launder clothing
Bites on lower extremities- near infestation. Breakast-lunch-dinner pattern.
papular pruetic urticaria. Worse in atopic people- IgE mediated reaction