Scabies Flashcards
What is the agent that causes scabies?
Sarcoptes scabiei mite
What are risk factors for scabies (6)?
Younger/older age Immunocompromised/developmentally delayed Overcrowded living conditions Bed-sharing Institutional settings Close contact with an infected person
When do people experience hypersensitivity to mites?
Experience hypersensitivity to mites, eggs, or feces ~3 weeks after the 1st exposure.
What are signs and symptoms of scabies (4)?
Intense itching, worse at night
Knots on a rope type appearance of papules or vesicles
Usually >1 body area is involved (face and scalp is spared)
Scratching leads to excoriations that may become secondarily infected
What is crusted/Norwegian scabies (5)?
Hyperkeratotic, more contagious form of scabies
More common in immunocompromised patients
Infestation may involve millions of mites
Lesions may be malodorous
High mortality rate.
What are non-pharm treatments for scabies?
Wash linens and clothes in soap and hot water
All surfaces should be vacuumed
Avoid body contact until treatment and follow up is complete
Trim fingernails to prevent injury
Cool compresses
What are first line therapies for scabies?
5% permethrin (Nix dermal cream, Kwellada-P)
Oral ivermectin
Which first line agent is safe for use in children >2 months and during pregnancy/breastfeeding?
5% permethrin (nix, kwellada)
What are second line treatments for treating scabies?
10% crotamiton (eurax)
5-10% sulfur
What scabies treatment can be used in infants <2 months old?
5-10% sulfur
How does scabies treatment differ from lice treatment?
All symptomatic and asymptomatic household members and close contacts should be treated at the same time
When can children return to school following treatment?
The day after they complete their initial treatment series
