Skin Microbiology - Bacterial/Fungal Flashcards
Gram positive cocci in clusters?
staphylococcus
Which type of Staphylococcus is coagulase positive (golden)?
staph aureus
What is an antibiotic resistant strain of staph aureus?
Antibiotic resistant strains
Which staphylococcus tends to cause UTIs in women?
Staph. saprophyticus
Gram positive cocci in chains?
streptococcus
What does – β(beta)-haemolytic mean?
complete haemolysis
What does α(alpha)-haemolytic mean?
partial haemolysis
What does γ(gamma) or non-haemolytic mean?
no haemolysis
What bacteria is non haemolytic?
Enterococcus sp.
What bacteria is β(beta)-haemolytic?
strep A, strep B
What bacteria is α-haemolytic?
Strep. pneumoniae
Strep “viridans”
What skin problems tend to be caused by Staph aureus?
Cellulitis Infected eczema Impetigo Wound infection Staphylococcal scalded skin syndrome
Which bacteria tends to cause Necrotising fasciitis?
Group A strep
What causes Erysipelas?
Group A strep
What is tinea?
ringworm
What is tinea pedis?
athletes foot
Who does scalp ringworm mainly affect?
children
Which bacteria is the most common cause of ringworm and how is it transmitted?
Trichophyton rubrum
human-human
Where does candida tend to cause infections?
in skin folds where area
is warm and moist
E.g. Seen under the breasts in females, groin areas,
abdominal skin folds etc, nappy area in babies
What causes scabies?
Sarcoptes scabiei
Where in the body does scabies tend to affect?
affecting finger webs, wrists,
genital area
Treatment of scabies?
malathion lotion, applied overnight to whole body and
washed off next day
benzyl benzoate (avoid in children)
What causes lice?
Pediculus capitis (head louse) Pediculus corporis (body louse) (vagabond's disease) Phthirus pubis (pubic louse)
What is treatment for lice?
Malathion
What type of bacteria can survive in the
environment because of their cell wall
structure?
gram positive
