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225 -Skin > Bacterial Skin Infections > Flashcards

Bacterial Skin Infections Flashcards

1
Q

What is this and what causes it?

A

Impetigo

Commonly Staph aureus

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2
Q

What is impetigo and how is it described?

A

Very infections superficial skin infection by S.aureus.

Crusty, erythematous, papular rash usually on the face.

It can also form bullae

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3
Q

What is this and what causes it?

A

Folliculitis

S.aureus

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4
Q

What is this called, what is it and what causes it?

A

Furuncle - small abscess from sebaceuous glands or hair follicles

S.aureus

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5
Q

What is this called, what is it and what causes it?

A

Carbuncle

Large abscess formed from a collection of furuncles

S.aureus

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6
Q

What types of infection does S.aureus tend to cause?

A

Superficial

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7
Q

What types of infection does Strep pyogenes tend to cause?

A

Deeper

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8
Q

What is this called, what is it and what causes it?

A

Ecthyma

It is localised infection that spreads to the dermis

Strep.pyogenes

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9
Q

How do you treat superficial skin lesions such as impetigo, ecthyma, furuncles, carbuncles and folliculitis?

A
  1. Conservative - washing, moisturising
  2. Topical antibiotics eg FUSIDIC ACID
  3. Oral antibiotics - Flucox for strep, penicllin for staph
  4. Incision or drainage
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10
Q

What is this?

A

Erysipelas

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11
Q

What is this?

A

Cellulitis

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12
Q

What is erysipelas and cellulitis and what tends to cause them?

A

Thise are spreading infections of the skin:

Erysipelas - Dermis and upper cutaneous tissue

Cellulitis - Deeper cutaneous tissues

Strep pyogenes

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13
Q

How is erysipelas distinguished from cellulitis?

A

It is more defined

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14
Q

What are the symptoms of erysipleas and cellulitis?

A

Redness

Swelling

Pain

Heat

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15
Q

How are erysipelas and cellulitis managed?

A

Antibiotics

Leg elevation, analgesia and rest

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16
Q

What are some possible complications of cellulitis?

A

Localised necrosis

Bacteremia

Oedema

17
Q

What is this?

A

Necrotising fasciitis

18
Q

What is necrotising fasciitis and what are the symptoms/What does it look like?

A

Medical emergency which spreads rapidly causing:

Extreme pain

Shock

Crepitus due to air

DARK AND WOODY

19
Q

What is the treatment for necrotising fasciitis?

A

IV antibiotics

?Amputation

20
Q

What is this and what causes it and what is its appearence?

A

Staph scalded skin syndrome from exfoliative toxin

Large bullae and blistering

21
Q

What are the symptoms of Staph scalded skin syndrome?

A

Pain

22
Q

What is the management of Staph scalded skin syndrome?

A

Antibiotics, analgesia, emolients

23
Q

What is this, how is it described and why does it happen?

A

Erythrasma

Macular hyperpigmentation due to stratum corneum thickening from infection

24
Q

What is this, how is it described and why does it happen?

A

Pitted keratolysis due to bacterium destroying keratin in stratum corneum

25
Q

What causes this rash and when does it appear?

A

Syphilis - t.pallidum

3-4 months after infection.

26
Q

What rash appears first in syphillis?

A

Primary chancre. Ulcerated lesion that is PAINLESS AND NON BLEEDING

Usually on genitals

27
Q

How do you treat syphillis?

A

Penicillin

28
Q

What causes this type of rash and what is the rash called?

A

Erythema chronicum migrans (bullseye rash) - It grows and causes systemic symptoms like the flu

Lyme disease

29
Q

What is this?

A

Lupus vulgaris caused by TB

Cutaeneous lesions on the face that are painful

30
Q

What are these?

Commonly occur in people who have fish.

What causes them?

A

Fishtank granuloma from mycobaterium marinum

Red scaly plaques on hand

31
Q

How do you know its erythema chronicum migrans and not erythema multiforme?

A

There is only ONE in erythema migrans

32
Q

What antibiotic could be good for skin infections?

A

Fusidic acid

33
Q

What is this?

A

Erythema toxicum neonatorum

Autoimmune - not infective

225 -Skin (10 decks)

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