Microbial Diseases Of The Skin And Eye

Question 1

The epidermis

Answer 1

Outer layer of dead cells and keratin that forms a barrier

Question 2

The substances released that are inhibitory to bacterial growth

Answer 2

Lysozyme

Question 3

The conditions Of the skin that are inhibitory to bacterial growth

Answer 3

Sweat glands, salt and lysozymes

Question 4

The substance that is released encourages bacterial growth

Answer 4

Moisture and oil sebum

Question 5

What are the common characteristics of staphylococcus Aures including the following frequency of causing skin infections Graham reaction morphology an arrangement and other characteristics

Answer 5

Very frequent and causing skin infections, gram-positive, coccus, irregular clusters, staphlo , salt tolerant, yellow, catalyst positive. Not antibiotic resistant

Question 6

What is the best way to conclusively identify staphylococcus Aures versus other staphylococcus species

Answer 6

Coagulase positive

Question 7

Name the disease is associated with staphylococcus Aures infections and rank them in order of severity

Answer 7

1. Follicilitis (pimple)
2. Boil
3. Impetigo
4. Scalded skin syndrome
5. Toxic shock syndrome
6. Gram positive sepsis
7. Food borne illness

Question 8

What makes boils abscesses difficult to treat

Answer 8

Sealed off from other tissue difficult to treat with anabiotic‘s

Question 9

Which diseases are associated with hair follicles

Answer 9

Boils and pimples

Question 10

Which diseases are most common in children

Answer 10

Impetigo, scalded skin syndrome

Question 11

Which diseases are systemic infection of S Aures 

Answer 11

Toxic shock syndrome, gram positive sepsis

Question 12

What are common characteristics of streptococcus pyogenes

Answer 12

Gram positive, coccus, chains (strepto), salt sensitive, catalase negative, can be antibiotic resistant,

Question 13

What features make streptococcus pyogenes dangerous

Answer 13

Toxin strepto lysin breaks blood cells and kills neutrophils. Spreads rapidly hyloronic acid. (Exotoxin?????)

Question 14

Describe the two skin infections commonly caused by S Pyogenes considering the presentation treatment and severity

Answer 14

Frysipelas : treatable, dura layer, spreads

Necrotizing fasciitis: death to tissue fascia 40 % mortality rate. Surgery broad spectrum antibiotics

Question 15

What is the most common bacterial skin infection and humans and which organisms causes it? What does this organism Grow on?

Answer 15

Acne, propionibacterium acnes, grows on sebum

Question 16

Warts (virus)

Answer 16

Papilloma viruses , often require surgery

Question 17

Smallpox (virus)

Answer 17

Pox virus , Eradicated by vaccination high mortality grows on epidermis

Question 18

Chicken pox / shingles (virus)

Answer 18

Herpes virus (vaccine) latent infection in nerve cells

Question 19

Measles (virus)

Answer 19

Rubeola , Infectious deadly, vaccine , spots all over body

Question 20

German measles (virus)

Answer 20

Rubella, milder, rash fever, birth defects

Question 21

Briefly describe the fungal infection ringworm (tinea) and Candidiasis and the types of drugs to treat them

Answer 21

Treatable with axils drugs, fluconazole, ketoconazole, miconazole, inhibits synthesis of erogsotera

Question 22

What parasitic disease of the skin are coming in human populations and how are these treated

Answer 22

Scabies head lice treated with pesticides, permetmin, mermectin

Question 23

Haemophilus Influenza Most commonly causes which Eye infection

Answer 23

Conjunctivitis: mucous membranes that line the eyeball and outer surface

Question 24

Neisseria gonorrhoeae

Answer 24

Optithalmia neonatrum: transmitted by infected mother during birth

Question 25

Chlamydia trachomatis

Answer 25

Trachoma, fomites or direct contact

* leading cause of blindness by infectious disease