Arthropods and Infestations Lecture Powerpoint

Question 1

Infestation

Answer 1

Multiplying and colonizing of the body by parasitic organisms

Question 2

Bed bugs

Answer 2

Red blood sucking insects that hide during day and emerge at night to feed, saliva causes itches and welts in most patients, capable of living one year without food, cannot transmit disease

Question 3

Bed bug bite

Answer 3

Nonspecific looking but tend to occur in clusters

Question 4

Bed bugs treatments (3)

Answer 4

• prevention looking for smears on bed linen
• topical steroid creams
• laundering, pesticides, heating, freezing, vacuuming

Question 5

Scabies

Answer 5

Pruritic rash caused by mites that eat human skin and hair follicle secretions specific to humans (animals have mange that isn’t contagious), greatest prevalence in poverty or crowded conditions, feces cause allergic rxn with 10-15 mites on a person at a time causing major pruritis between webs of skin, spread direct contact or clothing

Question 6

Scabies bites

Answer 6

Face usually spared, primarily burrow and cause pruritis at finger webs or folds

Question 7

Crusted/Norwegian scabies

Answer 7

Rare form of severe scabies only present in immunocompromised patients

Question 8

Scabies treatment

Answer 8

Permethrin cream 2 treatments 1-2 weeks apart

Question 9

Lice

Answer 9

Parasites of mammals that are host specific causing pediculosis in humans either capitus, corporus, or pubis, can only survive 10 days off host, feed on skin and blood and saliva causes rxn, spread via close perosnal contact or lack of hygiene, diagnosed often by itching with no apparent rash and visual inspeciton of hair or seeing nits fluoresce under wood’s lamp

Question 10

Eyelash involvement in lice infection implicates ___ lice

Answer 10

pubic

Question 11

Pediculosis ____ and ___ are not harmful, but rather ___ for them can be. Meanwhile, pediculosis ____ may be accompanied by serious disease

Answer 11

capitus, pubis, treatment, corporis

Question 12

Pets do not transmit…

Answer 12

….pediculosis

Question 13

Pediculosis types and assoc with socioeconomic class

Answer 13

Pediculosis capitus and pubis are not associated, pediculosis corporis is assoc. with poverty

Question 14

Treatments for pediculosis

Answer 14

• topical insecticide pymethrin
• nit comb
• deep cleaning

Question 15

Head lice and school

Answer 15

No need to exclude form school based on presence of live lice or nits