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dermatology > Infections > Flashcards

Infections Flashcards

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Dermatology Board Prep flashcards
1
Q

What is erysipelas

A

Superficial form of cellulitis localised to the dermis and lymphatic system

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2
Q

What causes erysipelas

A

Strep pyogenes

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3
Q

Associated symptoms of erysipelas

A

Fever and systemic upset

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4
Q

Where does erysipelas usually effect

A

The face

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5
Q

Management of erysipelas

A

Flucloxacilin

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6
Q

What is necrotising fasciitis

A

A rapidly progressive infection resulting in extensive necrosis of superficial fascia and overlying subcutaneous fat

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7
Q

Type 1 necrotising fasciitis

A

Caused by mixed anaerobes and coliforms usually post abdominal surgery

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8
Q

Type 2 necrotising fasciitis is caused by…

A

Group A strep infection

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9
Q

Risk factors for necrotising fasciitis

A

Poor immune function
Obesity
PWIDs
PAD

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10
Q

Systemic symptoms of necrotising fasciitis

A

Fever, chills, altered mental state

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11
Q

Clinical presentation of necrotising fasciitis

A

Diffuse erythema
Disproportionate pain
Crepitus
Purple skin discolouration

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12
Q

What is crepitus

A

A crackling, popping or grating sound or sensation that occurs when 2 surfaces rub against each other

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13
Q

Investigations in necrotising fasciitis

A

Blood cultures, gram stain and cultures from deep tissue

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14
Q

Management of necrotising fasciitis

A

Surgical debridement and antibiotics

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15
Q

Who is most likely to get impetigo

A

Children

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16
Q

Most common causative organism in impetigo

A

Staph aureus

17
Q

Clinical presentation of impetigo

A

Well defined lesions with a honey coloured golden crust and erythematous base
Usually on the face

18
Q

Management of impetigo

A

Topical fusidic acid for 7 days

19
Q

Management of extensive or severe impetigo

A

Flucloxacilin or clarithromycin + topical fusidic acid

20
Q

What is cellulitis

A

Inflammation and infection of the soft tissues

21
Q

Causative organisms for cellulitis

A

Strep pyogenes
Staph aureus

22
Q

What condition is associated with an increased risk of cellulitis

A

Diabetes

23
Q

Clinical presentation of cellulitis

A

Generalised swelling of the legs
Macular, hot erythema with ill defined margins that is spreading
Fevers, rigours, nausea

24
Q

General management of cellulitis

A

Rest
Elevation
Analgesia
Splint

25
Q

Antibiotic usually used in cellulitis

A

Flucloxacilin

dermatology (13 decks)

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