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Skin infections

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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

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Skin infections

  1. 1. Skin infections Shayan behnammanesh 1/3/2015
  2. 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. 3.  These conditions are different in depth and extent of skin involvment. Different types
  4. 4.  Non bullous impetigo bullous impetigo impetigo
  5. 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. 6. Bullous vs. non bullous
  7. 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. 8.  Infections involving upper dermis  Distinct margins.  b-hemolytic strep is the main cause. Erysipelas
  9. 9.  Management:  Elevation if applicable  Control predisposing conditions  Hydrate the skin  Compression stocking and diuretic therapy to improve edema Erysipelas
  10. 10.  Oral therapy: amoxicillin 500mg tds  Parenteral therapy: Ceftriaxone 1g iv daily  Improvement in 24 to 72 hrs. Erysipelas
  11. 11.  Infection of deeper dermis and subcutaneous fat.  The most common cause: 1- S aureus(50%) 2-GAS(27%) cellulitis
  12. 12.  History and exam:  Localized erythema and confluent  Blanching and swelling  Warmth  Tenderness  Lymphangitis with tender regional lymphadenopathy cellulitis
  13. 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. 14. cellulitis
  15. 15.  Risk factors for MRSA:  Recent hospitalization  Recent antiobiotic therapy  Hemodialysis  Military service  Daibetes  Hiv  Injection drug  Prolonged hospitalization cellulitis

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