This document provides an overview of common bacterial skin infections, including impetigo, ecthyma, furuncles, carbuncles, erysipelas, cellulitis, staphylococcal scalded skin syndrome, toxic shock syndrome, erythrasma, pitted keratolysis, trichomycosis, scarlet fever, cutaneous anthrax, and syphilis. For each infection, the causative bacteria, signs and symptoms, management, and other key details are discussed.

1. Bacterial skin infections DR. Ali El-ethawi Specialist Dermatologist M.B.CH.B , F.I.C.M.S, C.A.B.D 5 th class lecture

23. painful, tender, diffuse erythema was followed by generalized epidermal sloughing and erosions. S. aureus had colonized the nares with perioral impetigo, the site of exotoxin production.

34. Scarlet fever. Evolution of signs and symptoms. Temp > 38°C

40. Cutaneous anthrax A 40-year-old farmer with anthrax. A. A black eschar at the site of inoculation with a central hemorrhagic ulceration on the thumb associated with massive edema of the hand. B. A nodular lymphangitis extending proximally from the primary lesion on the thumb.

42. Treponema pallidum

50. Causes of False-Positive Reactions in Nontreponemal Serologic Tests for Syphilis

56. Hutchinson teeth

58. Recommendations for the Treatment of Syphilis