Skin Infections Flashcards
Folliculitis
inflammation/infection of the hair follicle
Folliculitis - organism
Staph > strep
Folliculitis - presentation
erythematous pustule involving hair follicle
Folliculitis - Tx
warm compress
- avoid systemic Abx
Furuncle
involves entire hair follicle surrounding soft tissue
A Furuncle has how many abscesses
one
Furuncle - organism
Staph aureus
Furuncle - Tx
- warm compress, I&D
- Doxy, Keflex, Clindamycin, Augementin, Bactrim
Carbuncle
group of furuncles with multiple drainage points
Carbuncle Tx
- I&D
- tetracyclines, Bactrim
- F/u 3-5 days
Erysipelas
infection of the dermis
Erysipelas - complications
can progress into periorbital or orbital cellulitis
Erysipelas - presentation
erythema, shiny, well demarcated
- usually to facial cheeks
Erysipelas Tx
- admit
- PCN or Vanco IV
- if outpatient, needs very close f/u (1 day)
Cellulitis
diffuse spreading infection of the epidermis, dermis, and SQ
Cellulitis - common location and portal of entry
- common on legs
- from toe fissures or tinea pedis
Cellulitis - organism
Staph and Strep
Erysipelas - organism
beta-hemolytic strep
commonly Group A strep
Cellulitis - Tx
- PCNs
- beta lactam inhibitors
- Sulfas
- Tetracylines
- Vanco
- Cephalosporins
Necrotizing Fasciitis
rapid progression of destruction of SQ fascia and fat
spares muscles
Necrotizing Fasciitis - presentation
bullae, crepitus of skin
Necrotizing Fasciitis - organism
Group A strep
can be staph aureus
Necrotizing Fasciitis - Tx
Urgent surgical consultation
Fournier’s Gangrene
rapidly progressing cellulitis/gangrene of penis and scrotum
Fournier’s Gangrene - risk factors
pts with Hx of DM, alcoholism, HIV, obesity, malignancy
Fournier’s Gangrene - portal of entry
perianal
Fournier’s Gangrene - organism
polymicrobial
likely anaerobic organisms
Fournier’s Gangrene - Tx
- surgery
- broad spectrum Abx (Vanco, Zosyn, metronidazole)
Gas gangrene
progressive destruction of SQ, fat, and muscle
Gas gangrene - organism
clostridium perfringens
