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AB 4th Year Ageing + Derm > Derm - Atopic Conditions > Flashcards

Derm - Atopic Conditions Flashcards

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Dermatology Board Prep flashcards
1
Q

pattern of allergic contact dermatitis?

A

pattern of contact

itchy

red

dermatitis

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2
Q

pattern of irritant contact dermatitis?

A

pattern follows exposure

red

weeping

dry

fissures

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3
Q

what type of hypersensitivity is allergic contact dermatitis?

A

type IV cell mediated (Th1)

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4
Q

what causes irritant contact dermatitis?

A

due to direct contact with agents that irritate the skin

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5
Q

Ix for contact dermatitis?

A

patch test

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6
Q

Tx for allergic and irritant contact dermatitis?

A

allergic - avoid, emollient, steroid

irritant - same

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7
Q

what is type 1 hypersensitivity?

A

IgE mediated due to antigen exposure this causes crosslinking of IgE bound to mast cells

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8
Q

features of allergic reaction?

A

itch

hives

angioedema

wheeze

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9
Q

Ix for allergic reaction?

A

RAST skin prick challenge test

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10
Q

Tx for allergic reaction?

A

AVOID

antihistamines

steroids

mast cell stabilisers (sodium cromoglycate)

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11
Q

Tx for anaphylaxis?

A

300ug in adults

150ug in kids IM

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12
Q

risk factors for eczema?

A

asthma

hayfever

FHx

food allergy

allergic rhinitis

<5yrs

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13
Q

features of eczema?

A

flexors in adults

red itchy rash

small amount of scale

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14
Q

features of eczema, specific to kids?

A

face and extensors

cradle cap

napkin area spared

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15
Q

chronic skin changes that occur with eczema?

A

excoriations

lichenification

pigmentation

scarring

habit scratch

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16
Q

criteria for eczema diagnosis?

A

itch and 3 of…

visible flexural rash

Hx

Hx/FHx of atopy

dry skin

onset before 2yrs

17
Q

Tx for eczema?

A

emollients

steroids

calcineurin inhibitors (tacrolimus)

antihistamines

phototherapy

DMARDs (AZA)

18
Q

what antihistamines are used at day/night?

A

day = cetirizine

night = chlorphenamine

19
Q

what is the steroid ladder?

A

hydrocortisone

eumovate

betnovate

dermovate

20
Q

what bacteria commonly infects eczema?

A

staph aureus

21
Q

what can commonly cause food allergy eczema?

A

milk

egg

22
Q

what causes eczema herpeticum? Tx?

A

infection with HSV

oral/IV antivirals

23
Q

features of eczema herpeticum?

A

fever

malaise

lymphadenopathy

24
Q

describe this rash and give a diagnosis

A

monomorphic

erosive/punched out

blistered rash

comes on suddenly

itchy

eczema herpeticum

25
Q

what is pompholyx eczema? features?

A

on the soles/palms

itchy, watery small blisters

AB 4th Year Ageing + Derm (11 decks)

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