these set of slides are about skin infections particularly cellulitis...they aren't complete, however they can give you clues about these infections. hope you enjoy them

1. Skin infections
Shayan behnammanesh
1/3/2015

2.  Skin is one the most and is the first line agaisnt
bacterial infections.
 The most common cause of skin and soft tissue
infection involves a breach in this barrier.

3.  These
conditions are
different in
depth and
extent of skin
involvment.
Different types

4.  Non bullous impetigo bullous impetigo
impetigo

5.  Common causes of alterations in the normal skin
flora:
 Abrasions
 Trauma
 Insect bite
 Eczema
 Scabies
impetigo
Most common cause:
1- group A hemolytic streptococci
2-staphylococcus aureus

6. Bullous vs. non bullous

7.  Good skin hygiene+ removal of crusted lesions in non
bullous type.
 Topical if lesions are local (<5), if the lesions are not
local or there is fever and regional lymphadenopathy
use systemic antibiotics.
 Topical: mupirocin tds for 3 to 5 days
 Systemic: cephalexin 250-500 qid
 Systemic mrsa: Clindamycin 300-450 qid
Management

8.  Infections
involving upper
dermis
 Distinct margins.
 b-hemolytic strep
is the main cause.
Erysipelas

9.  Management:
 Elevation if applicable
 Control predisposing conditions
 Hydrate the skin
 Compression stocking and diuretic therapy to improve edema
Erysipelas

10.  Oral therapy: amoxicillin 500mg tds
 Parenteral therapy: Ceftriaxone 1g iv daily
 Improvement in 24 to 72 hrs.
Erysipelas

11.  Infection of
deeper dermis
and
subcutaneous
fat.
 The most
common cause:
1- S aureus(50%)
2-GAS(27%)
cellulitis

12.  History and exam:
 Localized erythema and confluent
 Blanching and swelling
 Warmth
 Tenderness
 Lymphangitis with tender regional lymphadenopathy
cellulitis

13.  History and physical exam:
 Determine the extent of disease.
 Search for breaches and fungal infections.
 Mark the affected area.
 Purulent or non purulent???
Cellulitis
And classify the severity of cellulitis:

14. cellulitis

15.  Risk factors for MRSA:
 Recent hospitalization
 Recent antiobiotic therapy
 Hemodialysis
 Military service
 Daibetes
 Hiv
 Injection drug
 Prolonged hospitalization
cellulitis