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23 Cards in this Set
- Front
- Back
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What bacteria(s) cause impetigo?
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S. Aureus (some cases due to group A strep)
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Clinical signs of impetigo?
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One or more skin lesions
Honey coloured crustingOftern around nose and mouth Regional lymph nodes Bullae due to toxin production |
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Rx of impetigo?
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Topical mupurocin if localised
Oral fluclox for 7-10days Use own towel, bathe seperately (children!) |
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Complications of impetigo?
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Staph-scaleded skin syndrome
Strep-uritcaria, scarlet fever, glomerlulnephritis, erythema multiform |
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Define ecthyma
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Chronic infection of skin with crusting behind which is ulceration
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What bacteria(s) cause ecthyma?
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Mix of S. aureus and Group A strep
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Does ecthyma scar?
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Usually
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Common sites of ecthyma?
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Bum, thighs, lower leg, face.
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Rx of ecthyma?
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14 days high dose oral erythromycin or fluclox
Clindamycin may be used due to good tissue penetration |
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Define cellulitis.
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Acute, subacute or chronic infection of loose connective tissue
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What bacteria(s) cause cellulitis?
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Group A streps.
Staph aurues may be found in combination with group A strep |
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Clinical signs of cellulitis?
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Fever, malaise, systemic upset
Affected limb hot, painful and tender |
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Where is cellulitis usually situated?
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Lower limb
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Underlying causes of cellulitis?
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Insect bite, trauma,tinea pedis or ulceration
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Complications of cellulitis?
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Blistering
Extends into deep dermis causeing necrotising fasciitis Subcutaneous absecess lymphoedema septicaemia myocarditis renal failure |
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Rx of necrotisinf fasciitis?
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Urgant debridement
high dose IV antibiotics |
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Ix of cellulitis?
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Swab blisters or port of entry
WCC CRP ASO titre severl days after actue infection Blood cultures (but rare to isolate causitive organism) |
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Rx of cellulitis?
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High dose oral or IV benylpenicillin or fluclox for min 10-14days
Recurrent episodes-low dose penicillin prophylaxis |
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Define erysipelas
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Infection of dermis and upper subcutaneous tissue associated with well defined edge reflecting dermal infection
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Where does erysipelas commonly affect?
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The face
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What bacteria(s) cause erysipelas?
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Group A strep
Very rarely S. aureus Hib in young children esp <2years |
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Clinical signs of erysipelas?
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Acute severe fever, malaise, well defined erythems of face which is tender
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Ix of erysipelas
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Nasal, throat, ear and conjunctival swabs of symptomatic there
FBC, blood cutures search for port of entry |
