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NMF: dermatology > Acne + rosacea > Flashcards

Acne + rosacea Flashcards

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Dermatology Board Prep flashcards
1
Q

What is mild acne?

A

scattered papules and pustules

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2
Q

What is moderate acne?

A

papules, pustules and mild atrophic scarring

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3
Q

What characterises severe acne?

A

significant scarring, papules, pustules, cysts and nodules

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4
Q

What topical treatments can be used in acne?

A

benzoyl peroxide
antibiotics eg clindamycin
retinoids eg adapalene

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5
Q

What simple systemic agents can be given in acne?

A

antibiotics eg lymecycline

COCP eg dianette

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6
Q

What COCP should be avoided in acne?

A

progesterone only pill

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7
Q

What are the side effects of isotretinoin?

A 
dry, fragile skin
hyperlipidaemia
abnormal LFTs
teratogenic
mood alteration
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8
Q

What are the subtypes of rosacea?

A

inflammatory eg. papules + pustules
flushing
telangiectasia

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9
Q

What are the complications of rosacea?

A

ocular: blepharitis/ conjunctivitis

rhinophyma

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10
Q

How can rosacea be managed?

A

avoid triggers
topical metronidazole or sulantra
oral antibiotics
laser for telangiectasia

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11
Q

What is rosacea?

A

chronic relapsing/remitting disorder of blood vessels and pilosebaceous units of the central face

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12
Q

What is the mechanism of benzoyl peroxide?

A

anti-comedonal
anti-microbial
anti-inflammatory

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13
Q

What are the side effects of benzoyl peroxide?

A

erythema
peeling
stains clothes + bedding

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14
Q

What action do topical retinoids have?

A

anti-comedonal

anti-inflammatory

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15
Q

What are the side effects of topical retinoids?

A

stinging
peeling
irritation
erythema

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16
Q

Which 3 topical antibiotics can be used in acne?

A

clindamycin
tetracycline
erythromycin

17
Q

How does the COCP help acne?

A

oestrogen increases sex hormone binding globulins which mops up free androgens to decrease sebum production

oestrogen and cyproterone acetate decrease androgen production by the adrenals

18
Q

How long does it take the COCP to decrease acne?

A

6 months to reduce sebum

19
Q

How is mild acne treated?

A

topicals only

20
Q

How is moderate acne treatment?

A

topicals + oral contraceptive/ antibiotic

21
Q

How is severe acne treated?

A

isotretinoin

22
Q

When is the peak incidence of rosacea?

A

30-40

23
Q

How is rosacea distinct from acne?

A

normal sebum excretion

no comedones

24
Q

What are the 3 most important clinical features in rosacea?

A

papules, pustules and erythema

NMF: dermatology (8 decks)

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