Flashcards in Parasitic Skin Infections Deck (60)
What are parasitic dermatoses?
pediculosis and scabies
What causes pediculosis?
ectoparasites that live on body
What is the common term for pediculosis?
What causes the pruritis with lice?
pierce skin and inject saliva
Are lice able to survive away from human host?
How long does it take for lice to die of starvation?
10 days away from host
How many eggs does a female louse lay each day?
3-6, white 1mm long
How long does it take a nit to latch and mature?
8-10 days hatch, 12-15 mature, live for 10 days
What lice infest head?
What lice infest body?
What lice infect pubic area?
Pediculosis pubis or Pthirus pubis
What is the most common manifestation of pediculosis?
Where does p corporis cause itching?
axilla, truncal and groin
What are associated features of pediculosis?
papules, wheals, bit reaction, excoriation
What is pathognomic for infestation of life?
How do maculae cerulea?
blue-gray macules, enzyme in saliva break down human bilirubin
How long does head lice survive away from human?
What are the effected areas in pediculosis capitus?
scalp, neck, postauricular
How do you get head lice?
combs, brushes, hats, scarves, bedding
How do you dislodge lice?
sweater removal, hair combing
How far can head lice travel?
What are symptoms of p. capitis?
scalp pruritius, occipital lymphadenopathy, impetigo
Where is heaviest infection for p. capitis?
Where do p. corporis lay their eggs?
How long can p. corporis survive?
What has p humanus corporis?
typhus, trench fever, relapsing fever
What do you see with p. corporis?
multiple lesions from bites present, uninfected are papules 2-4 mm, located anywhere
What are eyelash nits a manifestation?
pubic louse infestation
What lice species is less mobile?