Bacterial Skin Infections Flashcards
(25 cards)
What is lymphangitis?
Red streaks extending proximally from areas of cellulitis
Which organism is the most common cause of folliculitis
Staph aureus
Which organism causes “hot tub folliculitis”
Psuedomonas
Does folliculitis itch?
Yes
Which is worse: a furuncle or a carbuncle
Carbuncle
True or false:
Most cases of folliculitis are self limiting and do not require antibiotics
True
What are the 3 variants of impetigo?
- Nonbullous
- Bullous
- Ecthyma
“Honey colored crusting”
Non bullous impetigo
“Punched out” ulcers with overlying crust (look like cigarette burns)
Ecthyma
Which organism usually causes Nonbullous and Bullous impetigo
staph aureus
Which organism usually causes ecthyma
Strep
What is the most common organism that causes cellulitis
B-hemolytic strep
If cellulitis has purulent drainage, it is more likely to be caused by (strep/staph)
Staph
What is this:
A superficial raised cellulitis with a sharply demarcated border. Tender, warm, and intensely erythematous
Erysipelas
Which parts of the body are usually affected by erysipelas?
Cheeks
Legs
Which bacteria causes erysipelas?
B-hemolytic strep
True or false:
Erysipelas is a form of cellulitis
True
Best treatment for abscess
Incision and drainage
Patients with erysipelas are (very sick/not sick)
Very sick
Patients with erysipelas require _____ antibiotics
IV
Which bacteria most commonly causes abscesses?
Staph aureus
Abscesses do not always require antibiotics after you drain them.
When DO they need antibiotics?
> 2cm or multiple abscesses
Toxic
Extensive cellulitis
Immunosuppression
Indwelling medical device
High risk for transmission (athlete, military)
Risk factors for MRSA
Antibiotic use
Invasive device
Hospitalization
Group settings (miliatary, nursing home, etc)
Chronic wound
MRSA colonization in nose
Skin trauma (tattoo, IVDU)
“I have a spider bite”
MRSA
