Infestations and Bites

Question 1

what is pediculus humanus var. capitis

Answer 1

• head lice

Question 2

pedulosis capitis is found where

Answer 2

• proximal hair shaft of occipital scalp

Question 3

are pediculosis capitis moveable

Answer 3

• not movable along hair shafts

Question 4

pediculosis capitis most common in what age group

Answer 4

• children

Question 5

pediculosis capitis transmitted by

Answer 5

• direct contact - combs - pillows

Question 6

pediculus humanus var. capitis is what kind of louse

Answer 6

• head louse

Question 7

pediculus humanus var. corporis is what kind of louse

Answer 7

• body louse

Question 8

phthrius pubis is what kind of louse

Answer 8

• pubic or crab louse

Question 9

what indicates live infection in pediculosis

Answer 9

• live adult lice - immature nymphs (nits) - viable eggs

Question 10

treatment of pediculosis

Answer 10

• physical removal - OTC/prescription topical therapy - 1% permethrin lotion

Question 11

treatment of pediculosis for resistant cases

Answer 11

• topical ivermectin - malathion

Question 12

what condition is indicative of burrows in the web spaces of the hand

Answer 12

• scabies (Sarcoptes scabiei)

Question 13

diagnostic procedure for scabies

Answer 13

• skin scraping (mineral oil prep)

Question 14

what is the name for scabies feces

Answer 14

• scybala

Question 15

scabies is more common in what gender and age

Answer 15

• women and children

Question 16

scabies is more common in what setting

Answer 16

• group settings

Question 17

scabies is spread by

Answer 17

• direct contact

Question 18

most common sites for scabies

Answer 18

• finger webs - waistline - umbilicus - breast - axilla - scrotum and penis

Question 19

what of scabies are linear markings in the skin due to movement of the mite where are they found most readily

Answer 19

• burrows - interdigital spaces - wrists - elbows

Question 20

what is a severe highly contagious variant of scabies found in disabled and immunocompromised patients

Answer 20

• crusted scabies

Question 21

treatment of crusted scabies

Answer 21

• oral ivermectin

Question 22

treatment of scabies

Answer 22

• 5% permethrin cream - oral ivermectin

Question 23

overal ivermectin not recommended for

Answer 23

• pregnant or lactating women

Question 24

what is cimix lectularius

Answer 24

• bed bug

Question 25

bed bugs live where

Answer 25

- furniture - mattress seams

Question 26

characteristic of cimix lectularius

Answer 26

- distinct odor

Question 27

cimix lectularius during the day

Answer 27

- hidden

Question 28

cimix lectularius at night

Answer 28

- feed at night

Question 29

cimix lectularius bites

Answer 29

- multiple in a linear array - breakfast, lunch, dinner patterns

Question 30

cimix lectularius can live ___ without feeding

Answer 30

- 1 year

Question 31

cimix lectularius saliva contains

Answer 31

- vasodilators - anti-platelet agents

Question 32

cimix lectularius treatment for bites

Answer 32

- topical corticosteroids

Question 33

what starts out as a painful bump, moves to a zone of erythema with central ischemia surrounding a hemorrhagic bulla also known as

Answer 33

- brown recluse spider bite - red, white and blue sign

Question 34

brown recluse spider has what characteristic marking on the cephalothorax

Answer 34

- violin-shaped

Question 35

brown recluse spider found where in the US live where

Answer 35

- midwest - southeast - dark areas, attics, boxes, clothing

Question 36

brown recluse spider initial wound may progress to

Answer 36

- necrosis - deep ulcer formation

Question 37

important to rule out _____ with brown recluse spider bite

Answer 37

- MRSA infection

Question 38

tissue necrosis with brown recluse spider bites may occur due to

Answer 38

- sphingomyelinase

Question 39

treamtment of brown recluse spider bite

Answer 39

- supportive care - pain control

Question 40

with pruritic papules, what do you think?

Answer 40

- scabies

Question 41

with edematous papules, what do you think?

Answer 41

- bedbug bites