1/26/2016 Normal Microbiota of the Skin Microbial Diseases of the Skin Gram-positive pleomorphic rods (diphtheroids) Learning Objectives -Propionibacterium acnes inhabits hai follicles:anaerobic:lives on sebum Differentiate staphylococci from Produces acids that maintain low skin pH streptococci,and name several skin Corynebacterium xerosis occupies the infections caused by each. skin surface:aerobic List the causative agent,mode of yeast transmission,and clinical symptoms of -Malassezia furfur:causes dandruff Pseudomonas dermatitis,otitis externa, -Dandruff shampoos contain an and acne. this yeast Microbial Diseases of the Skin Microbial Diseases of the Skin Learning Objective Learning Objectives List the causative agents,modes of Differentiate cutaneous from subcutaneous mycoses and provide an transmission,and symptoms of warts, smallpox,monkeypox,chickenpox, example of each. shingles,cold sores,measles,and List the causative agent and predisposing rubella factors for candidiasis. List the causative agent,mode of transmission,clinical symptoms,and treatment for scabies and pediculosis.1/26/2016 4 Normal Microbiota of the Skin • Gram-positive pleomorphic rods (diphtheroids) – Propionibacterium acnes inhabits hair follicles; anaerobic; lives on sebum • Produces acids that maintain low skin pH – Corynebacterium xerosis occupies the skin surface; aerobic • Yeast – Malassezia furfur; causes dandruff – Dandruff shampoos contain an antibiotic against this yeast Microbial Diseases of the Skin Learning Objectives Differentiate staphylococci from streptococci, and name several skin infections caused by each. List the causative agent, mode of transmission, and clinical symptoms of Pseudomonas dermatitis, otitis externa, and acne. Microbial Diseases of the Skin Learning Objective List the causative agents, modes of transmission, and symptoms of warts, smallpox, monkeypox, chickenpox, shingles, cold sores, measles, and rub ll e a. Microbial Diseases of the Skin Learning Objectives Differentiate cutaneous from subcutaneous mycoses and provide an example of each. List the causative agent and predisposing factors for candidiasis. List the causative agent, mode of transmission, clinical symptoms, and treatment for scabies and pediculosis