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1
Q

What is this? Which is acute and which is chronic?

A

dermatitis

top: acute
bottom: chronic

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2
Q

Patient had exposure to irritant.

A

eczematous, scaly edematous plaques with vesicles in areas of exposure

allergic contact dermatitis

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3
Q
A

left: poison oak (3-7 cm, lobulated notched edges, groups of 3, 5 or 7, bush)
right: poison ivy (groups of 3s, hairy stem notched edges, 3-15 cm, vines or shrubs)

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4
Q
A

Rhus allergy

lesions begin as erythematous macules that become papules or plaques, blisters from over one or two days

linear streaks

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5
Q
A

Rhus allergy

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6
Q
A

linear streaks, fomites can be contaminated by plant oil and lead to recurrent eruptions

Rhus dermatitis

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7
Q
A

eyelid allergic contact dermatitis

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8
Q

What allergen might this person be exposed to?

A

topical antibiotic cream

allergic contact dermatitis

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9
Q

What allergen might this person be exposed to?

A

nickel allergic contact dermatitis from glasses

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10
Q

What allergen might this person be exposed to?

A

allergic contact dermatitis from nickel from belt

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11
Q

What allergen might this respiratory therapist be exposed to?

A

latex allergy

allergic contact dermatitis

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12
Q

What are the possible allergen exposures in these pictures?

A

allergic contact dermatitis

upper left: neoprene in keyboard pad

lower left: paraphenylenediamene

upper right: shoe

lower right: bleached rubber

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13
Q
A

allergic contact dermatits

top: bacitracin
low: neomycin in otic suspension

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14
Q
A

allergic contact dermatitis

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15
Q
A

allergic contact dermatitis

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16
Q
A

irritant contact dermatitis

left: pepper spray
right: bleach

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17
Q
A

atopic dermatitis

a: flexure erythema
b: flexural eczema
c: flexural lichenification
d: circumoral pallor
e: Dennie Morgan folds

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18
Q
A

atopic dermatitis

excoriations and lichenification on flexor surfaces of elbow and wrist and on hand

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19
Q
A

atopic dermatitis

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20
Q
A

atopic dermatitis

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21
Q
A

atopic dermatitis

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22
Q
A

erosions, drainage with yellow crusting indicates infection

atopic dermatitis

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23
Q
A

multiple wide spread monomorphic punched out discrete erosion with hemorrhagic crusting

eczema herpeticum

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24
Q
A

coin shaped lesionof acute/subacute dermatitis that are fairly well demarcated

nummular dermatitis/ discoid eczema

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25
Q
A

nummular dermatitis/ discoid eczema

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26
Q
A

dyshidrotic eczema/pompholyx

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27
Q
A

dyshidrotic eczema/pompholyx

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28
Q
A

dyshidrotic eczema/pompholyx

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29
Q
A

lichenified plaque

Lichen Simplex Chronicus

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30
Q
A

urticaria

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31
Q
A

angioedema

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32
Q
A

physical urticaria

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33
Q
A

morbillifrom eruption from drug reaction

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34
Q
A

small, pink, itchy papules on pressure bearing areas, spread over time to become confluent, may be purpuric

morbillifrom drug eruption

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35
Q
A

morbilliform drug rash

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36
Q
A

urticarial drug reaction

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37
Q
A

urticarial drug reaction

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38
Q
A

facial edema, seere morbilliform drug reaction

DRESS: drug rash with eosinophilia and systemic systems

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39
Q
A
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40
Q
A

fixed drug eruption

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41
Q
A

dusky target lesion

stevens-johnson syndrome or tumor epidermal necrolysis

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42
Q
A

stevens-johnson syndrome or tumor epidermal necrolysis

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43
Q
A

Stvens-Johnson syndrome or tumor epidermal necrolysis

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44
Q
A

conjunctivitis

Steven-johnson syndrome or tumor epidermal necrolysis

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45
Q
A

stevens-johnson syndrome or toxic epidermal necrolysis

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46
Q
A

toxic epidermal necrolysis

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47
Q
A

toxic epidernal necrolysis

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48
Q
A

toxic epidermal necrolysis

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49
Q
A

toxic epidermal necrolysis

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50
Q
A

bullous diabeticorum due to DM vessel insufficiency

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51
Q
A

coma blister

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52
Q
A

bullous impetigo

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53
Q
A

edema blister

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54
Q
A

bullous small vessel cutaneous vasculitis

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55
Q
A

bullous fixed drug reaction

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56
Q
A

exuberant bug bites in leukemia patient

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57
Q
A

blister from bed bug bite

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58
Q
A

cutaneous mastocytoma: mast cells

rub they will degranulate

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59
Q
A

abnormal adhesion: genetic

epidermolysis bullosa

60
Q
A

bullous pemphigoid

61
Q
A

clean split between intact epidermis and dermis

bullous pemphigoid

62
Q
A

eosinophils can form before the blister forms

bullous pemphigoid

63
Q
A

bullous pemphigoid (can be confused with drug rxn)

64
Q
A

tense blister

bullous pemphigoid

65
Q

Push and don’t rupture.

A

occurring different times

bullous pemphigoid

66
Q
A

different times

bullous pemphigoid

67
Q
A

bullous pemphigoid

68
Q
A

bullous pemphigoid

69
Q
A

healing bullous pemphigoid

70
Q
A

mucous membrane pemphigoid

71
Q
A

gestational pemphigoid

72
Q

IgG and C3

A

bullous pemphigoid

73
Q

IgG and C3

A

histo: row of tombstones, intraepidermal split within epidermis, acantholysis (individual cells lose attachment)

IF: intercellular net-like between keratinocytes

pemphis vulgaris

75
Q
A

oral erosion

pemphigus vulgaris

76
Q
A

pemphigus vulgaris

77
Q
A

pemphigus vulgaris

78
Q
A

pemphigus vulgaris

79
Q
A

pemphigus vulgaris

80
Q
A

dermatitis herpetiformis

81
Q

IgA and C3

A

top: neutrophilic, eosinophilic infiltrate at dermal papillae, neutrophilic abscess
bottom: IF: granular IgA and C3 in dermal papillae

82
Q
83
Q
A

scurvy: need vit. C to maintain capillary

petechiae

84
Q
A

large ecchymosis

85
Q
A

solar purpura

86
Q
A

linear purpura due to blood pressure cuff

thrombocytopenia and trauma

87
Q
A

steroid induced atrophy, actinic damage, trauma (compression device)

purpura

88
Q
A

hypergammaglobulinemic purpura of Waldenstrom

ecchymosis

89
Q
A

Henoch-Schnonlein purpura

90
Q
A

Henoch-Schonlein purpura

91
Q
A

Henoch-Schonlein purpura

inflammation of superficial vessels

92
Q
A

small vessel vasculitis

93
Q
A

small vessel vasculitis

94
Q
A

small vessel vasculitis

95
Q
A

leukocytoclastic vasculitis with myelodysplasia

96
Q
A

meningococcemia (acute)

97
Q
A

leukocytoclastic vasculitis

98
Q
A

leukocytoclastic vasculitis

99
Q
A

vasculitis affecting dependent areas in hospitalized patient

100
Q
A

Churg-Strauss vasculitis

101
Q
A

Henoch-Schonlein purpura

102
Q

IgA: vessels

A

henoch-schonlein purpura

103
Q
A

polyarteritis nodosa

104
Q
A

inflammation of deep vessels

polyarteritis nodosa

105
Q
A

purpura fulminans in DIC

106
Q

6am to 11am

A

purpura fulminans forming

107
Q
A

purpura fulminans

108
Q
A

purpura fulminans

109
Q
A

purpura fulminans

110
Q
A

plaque psoriasis

extensor surface, erythemic with white scales

111
Q
A

spares popliteal fossa

psoriasis

112
Q
A

silver white scaling

psoriasis

113
Q
A

tear drop, erythematous scaly

guttate psoriasis

114
Q
A

erythrodermic psoriasis

115
Q
A

a,b: psoriasis

c,d: pustular psoriasis

e: penile psoriasis

116
Q
A

f: guttate psoriasis
g: generalized pustular psoriasis
h: erythrodermic psoriasis

117
Q
A

distal onchylysis

psoriasis

118
Q
A

nail pitting

psoriasis

119
Q
A

geographic tongue

psoriasis

120
Q
A

DIP PIP, sausage fingers

psoariatic arthritis

121
Q
A

Seborrheic dermatitis

122
Q
A

Seborrheic dermatitis

123
Q
A

Seborrheic dermatitis

124
Q
A

Seborrheic dermatitis

125
Q
A

Seborrheic dermatitis

126
Q
A

pityriasis rosea

127
Q
A

pityriasis rosea

128
Q
A

herald patch: outer scaling inner clearing

pityriasis rosea

129
Q
A

lichen planus

a: wrist
b: purple polygonal papules
c: foot
d: penis

130
Q
A

lichen planus

e. penis
f. erosive oral lichen planus
g: vulvar lichen planus

131
Q
A

lichen planus

132
Q
A

lichen planus

133
Q
A

hypertrophic lichen planus

134
Q
A

tiny, females lay 3 eggs/day

most patients have less than 20 mites

scabies mite

135
Q
136
Q
A

burrow: linear marking in skin due to movement of mite usually found in interdigital spaces, wrists, elbows

scabies

137
Q
A

burrow

scabies

138
Q
139
Q
A

scrape from burrow

scabies: mite, egg, feces

140
Q
A

crusted scabies

really high mite burden

141
Q
142
Q
A

nits (oval egg capsules) FIRMLY fixed to hair shaft

143
Q
A

erythema migrans: bulls eye

lyme disease

144
Q
A

edematous papules scattered over the body, some excoriated

bed bugs

145
Q
A

red-brown with segemented abdomen and vestigial wings

Cimex lectularis

bed bugs

Skin (8 decks)

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