Arthropods

Front 1

Pediculus humanus - stages

Back 1

• egg (nit) - laid by adult, cemented to hair shaft
  
• nymph - looks like smaller version of adult
  
• adult - can live up to 30 days
  

Front 2

Pediculus humanus - transmission

Back 2

1. Person-to-person(i.e. head-to-head).Contact with an alreadyinfested person.

2. Fomites. Clothing,combs, pillows, stuffedanimal, etc.

Front 3

Pediculus humans - symptoms

Back 3

• asymptomatic
  
• tickling feeling in hair
  
• itching caused by an allergic reaction to louse saliva
  
• secondary bacterial infection maybe a complication
  

Front 4

Pediculus humanus - diagnosis

Back 4

Finding a live nymphor adult louse on thescalp or in the hair of aperson

Front 5

head lice vs body lice

Back 5

Head Lice: (Pediculus humanus capitis).Commonly observed in children ages 3-10and their immediate family members

Body Lice: (Pediculus humanus corporis) This type of lice is generally spread bybeing in close proximity to others

Front 6

Phthirus pubis - common name and transmission

Back 6

Commonlypassed through sexual contact and isoften called crab lice or ‘crabs’ or public lice

Front 7

Sarcoptes scabei - symptoms

Back 7

• Pimple-like irritations
  
• Intense itching, especially at nightand over most of the body.
  
• Sores on the body caused by scratching.
  
• Thesesores can sometimes become infected withbacteria.
  
• Norwegian orcrusted scabies (immunocompromised)
  

Front 8

Sarcoptes scabei - transmission

Back 8

occurs worldwide, spread from person to person and from fomites

often in close, crowded conditions

Front 9

Sarcoptes scabei - diagnosis

Back 9

For a person who has neverbeen infested with scabies,symptoms may take 4-6 weeksto begin.

Diagnosis:Most commonly made bylooking at the burrows or rash.A skin scraping may be takento look for mites, eggs, or mitefecal matter to confirm thediagnosis.