Microbial Diseases Of The Skin And Eye Flashcards
The epidermis
Outer layer of dead cells and keratin that forms a barrier
The substances released that are inhibitory to bacterial growth
Lysozyme
The conditions Of the skin that are inhibitory to bacterial growth
Sweat glands, salt and lysozymes
The substance that is released encourages bacterial growth
Moisture and oil sebum
What are the common characteristics of staphylococcus Aures including the following frequency of causing skin infections Graham reaction morphology an arrangement and other characteristics
Very frequent and causing skin infections, gram-positive, coccus, irregular clusters, staphlo , salt tolerant, yellow, catalyst positive. Not antibiotic resistant
What is the best way to conclusively identify staphylococcus Aures versus other staphylococcus species
Coagulase positive
Name the disease is associated with staphylococcus Aures infections and rank them in order of severity
- Follicilitis (pimple)
- Boil
- Impetigo
- Scalded skin syndrome
- Toxic shock syndrome
- Gram positive sepsis
- Food borne illness
What makes boils abscesses difficult to treat
Sealed off from other tissue difficult to treat with anabiotic‘s
Which diseases are associated with hair follicles
Boils and pimples
Which diseases are most common in children
Impetigo, scalded skin syndrome
Which diseases are systemic infection of S Aures 
Toxic shock syndrome, gram positive sepsis
What are common characteristics of streptococcus pyogenes
Gram positive, coccus, chains (strepto), salt sensitive, catalase negative, can be antibiotic resistant,
What features make streptococcus pyogenes dangerous
Toxin strepto lysin breaks blood cells and kills neutrophils. Spreads rapidly hyloronic acid. (Exotoxin?????)
Describe the two skin infections commonly caused by S Pyogenes considering the presentation treatment and severity
Frysipelas : treatable, dura layer, spreads
Necrotizing fasciitis: death to tissue fascia 40 % mortality rate. Surgery broad spectrum antibiotics
What is the most common bacterial skin infection and humans and which organisms causes it? What does this organism Grow on?
Acne, propionibacterium acnes, grows on sebum
Warts (virus)
Papilloma viruses , often require surgery
Smallpox (virus)
Pox virus , Eradicated by vaccination high mortality grows on epidermis
Chicken pox / shingles (virus)
Herpes virus (vaccine) latent infection in nerve cells
Measles (virus)
Rubeola , Infectious deadly, vaccine , spots all over body
German measles (virus)
Rubella, milder, rash fever, birth defects
Briefly describe the fungal infection ringworm (tinea) and Candidiasis and the types of drugs to treat them
Treatable with axils drugs, fluconazole, ketoconazole, miconazole, inhibits synthesis of erogsotera
What parasitic disease of the skin are coming in human populations and how are these treated
Scabies head lice treated with pesticides, permetmin, mermectin
Haemophilus Influenza Most commonly causes which Eye infection
Conjunctivitis: mucous membranes that line the eyeball and outer surface
Neisseria gonorrhoeae
Optithalmia neonatrum: transmitted by infected mother during birth
Chlamydia trachomatis
Trachoma, fomites or direct contact
* leading cause of blindness by infectious disease
