ectoparasitic infestations

what are the ectoparasitic infections

scabies and lice

which organism causes scabies

sarcoptes scabei

mode of transmission of scabies

skin to skin

symptoms of scabies

itching, rash

when do symptoms of scabies show up

4-8 weeks after infestation

scabies symptoms are usually found around the…

skin folds

how can pts manage scabies without drugs

wash clothes and bedding in hot water

topical tx for scabies (this is pref)

permethrin 5%, leave on for 8-14 hours

can repeat in one week prn

oral tx for scabies

ivermectin

itching due to scabies can be tx’d with ___ or ____ but it can take up to 2-4 weeks to resolve

corticosteroid or antihistamines

lice pediculosis

head or body

crabs

pubic lice

which organisms cause head lice

pediculus humanus capitus

which organisms cause head/body lice

pediculus humanus corporis

lice mode of transmission

person to person

fabric contact (for body lice)

lice symptoms

itches and sores (due to itching tho)

non drug options for lice

nit comb

washing all things in hot water

what are the OTC tx options for both head and pubic lice

topical pyrethrins + piperonyl butoxide

permethrin 1%

ivermectin

instructions for permethrin 1% to treat lice

teat now and repeat on day 9

does ivermectin lotion require retreatment for lice

no

what are the two Rx products for head lice

spinosad

malathion

pyrethrins should be avoided in pts with allergies to…

ragweed or chrysanthemums

how long does lice survive off of humans

1-2 days

itching due to lice can continue for ____ after tx

2-4 weeks