Bugs & Bites Flashcards
1
Q
What is Scabies?
Where is it m/c located?
A
- An intensely pruritic, contagious disease caused by Sarcoptes scabei transmitted by direct contact
- M/C in web spaces, body folds, wrists, between fingers & toes
2
Q
Itch that’s worse at night, other family members have similar sx
A
Scabies
3
Q
What skin manifestations are seen with Scabies?
A
- “Burrows”
- 1-2mm pustules (infants)
- Nodules/papules –> nodules on scrotum = scabies until proven otherwise!
- Eczematous reaction pattern with excoriation
4
Q
What labs should you order for Scabies?
A
- Skin Biopsy
- Mineral oil/KOH
5
Q
How do you treat Scabies?
A
- Permetherin topical cream
- Wash sheets in hot water
- Ivermectin
- Precipitated sulfur 6% if <2 mo old
6
Q
Head lice is m/c in?
Body lice is associated with?
Pubic lice is also known as?
A
- School-age kids
- Poor hygiene
- “Crabs” (STD)
7
Q
What skin findings to you see with lice?
A
- Live lice
- Pruritic papules
- “White dots” (nits) on hair shaft
8
Q
How is lice treated?
A
- Permetherin rinse (NIX/Elimite)
- Ivermectin
- Lindane
- Shaving to remove nits
9
Q
Linear distribution of bites
A
Bed Bugs
10
Q
How do you treat bed bugs?
A
- Topical steroids
- Antihistamines
- Extermination
11
Q
What’s the causative agent for Rocky Mountain Spotted Fever (RMSF)?
A
Rickettsia ricketsii
12
Q
RMSF is characterized by acute onset of?
A
- Fever
- Severe H/A
- Myalgia
- Vomiting
- Petechial rash (day 3-5, but not all develop a rash)
13
Q
What skin manifestations are seen with RMSF?
What’s the distribution?
A
- Discrete pink/purple macules that BLANCH with pressure then becomes petechial
- Diffuse vasculitis
- Starts on wrists & ankles –> palms/soles –> generalized
14
Q
Complication of RMSF rash?
A
Post-inflammatory hyperpigmentation
15
Q
T/F Labs are helpful for RMSF?
A
FALSE they’re rarely helpful
