Bacterial Infections Flashcards
What is Impetigo? What’s it characterized by?
Who is m/c affected?
Where is it m/c located?
- Superficial bacterial infection characterized by “Honey-Colored crusts”
- M/C in young
- M/C on face, nose, mouth
What’s the m/c/c of Impetigo?
What’re common sx?
- Staph aureus
- Burning, itching, spreads quickly
T/F: Impetigo is contagious.
True
How is Impetigo diagnosed?
Bacterial cx
How do you treat Impetigo?
- Topical or systemic/oral abx (preferred oral = Dicloxacillin)
- Abx soaps
For localized, uncomplicated or non-bullous, topical therapy alone = TOC
What is Erysipelas?
What’s it caused by?
Where is it commonly found?
- Acute streptococcal infection caused by Group A beta hemolytic strep
- Superficial form of cellulitis
- M/C on face & lower extremities
Erysipelas is often preceded by?
What’s it associated with?
- Recent trauma or pharyngitis (prodrome)
- Associated with GN, endocarditis, & lymphedema
S&S of Erysipelas?
- FIERY red, indurated, tense, shiny plaque with raised sharply demarcated advancing margins!!
- Burning
- Itching
- Super tender
- Warm
- Edema
How do you treat Erysipelas?
Drug of choice = Penicillin (if allergic, Macrolides)
Cellulitis is more _________ while Stasis Dermatitis is more __________.
- Unilateral
- Bilateral
What is Cellulitis?
What’s the m/c/c?
Where is it commonly found?
- A deep infection of the skin
- M/C/C = Group A Strep (also Staph aureus)
- Common on lower legs
What’re clinical features of Cellulitis?
- Rubor (red) –> diffuse inflammation of the dermis & SQ tissue
- Warm
- Pain
- Swelling
How do you treat Cellulitis?
MUST COVER STAPH & STREP
Uncomplicated - Dicloxacillin, Cephalexin, Clinda
MRSA (+) - Bactrim, Minocycline, Doxy
Severe - Nafcillin for MSSA, Vanco for MRSA
What’s the m/c/c of Bacterial Folliculitis?
What’re major sites of involvement?
- Staph aureus
- Scalp, Buttocks/Thighs, Chest/Back, Face/Beard
What does Bacterial Folliculitis look like?
Discrete papules/pustules surrounding hair follicle
