Dermatitis Flashcards

1
Q

Acute manifestations of Dermatitis

A

erythema, vesiculation, weeping, edema

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2
Q

Chronic manifestations of Dermatitis

A

thickening, lichenification, scaling

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3
Q

Histologic features of Dermatitis

A

Acanthosis
Spongiosis
Exocytosis
Subcortical pustule

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4
Q

thickening of the rete ridges

A

acanthosis

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5
Q

edema and serous exudates between the epidermis cells

A

spongiosis

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6
Q

presence of infiltrates in the epidermis and the dermis

A

exocytosis

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7
Q

presence of neutrophils and bacteria on the epidermis

A

subcortical pustule

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8
Q

Sign of scratching and the end stage of eczema or dermatitis

A

Lichen Simplex Chronicus

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9
Q

Classification of dermatitis

A

Exogenous
Endogenous
Unclassified

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10
Q

Dermatitis arising from direct skin exposure to a substance

A

Contact dermatitis

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11
Q
acids
alkalis
metalic elements 
salt 
essential oils
A

Strong irritants

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12
Q

detergent
organic solvent
water

A

weak/mild irritants

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13
Q

allergic contact dermatitis is elicited by what type of hypersensitivity

A

type 4

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14
Q

occurs when a particular substance elicits a type 4 hypersensitivity reaction

A

allergic contact dermatitis

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15
Q

two phases of allergic contact dermatitis

A
sensitization phase ( first contact with allergen ) 
elicitation phase ( subsequent contact)
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16
Q

Lesion is sharp, strictly confined to the site of exposure but spreading to the periphery. Due to exposure to a substance illicit type 4 hypersensitivity

A

Allergic contact dermatitis

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17
Q

most common cause of topical medication dermatitis

18
Q

cause of metal dermatitis

A

nickel and cobalt

19
Q

cause of footwear dermatitis

20
Q

Purpuric ACD
Lichenoid ACD
Lymphomatoid ACD
ECtopic ACD/ airborne ACD

A

Non-eczematous variants

21
Q

Types of ectopic / airborne ACD

A

Autotransfer

Heterotransfer

22
Q

eruption caused by sensitization due to sun activated irritant/ allergen

A

photocontact dermatitis

23
Q

components of photocontact dermatitis

A

chemical + sun exposure

24
Q

main symptom of contact dermatitis

25
dermatitis caused by the reactions of the body to self-molecules
atopic dermatitis
26
atopic dermatitis is also known as
Besnier's prurigo | neurodermatitis disseminata
27
atopic dermatitis is commonly found in_______ as _________
antecubital and popliteal areas | lichenified plaques
28
gene encoding for filament aggregating protein involved in establishing epidermal barrier
filaggrin
29
Typical patterns of atopic dermatitis across age groups
infantile : extensor Childhood: flexor Adolescent: flexural lichenification Adult: senile atopic dermititis
30
Major Criteria of Atopic Dermatitis
(3/4) Pruritus Chronicity/ Chronically relapsing dermatitis Personal or family history of atopy Typical morpholgy and distribution of skin lesions
31
Dry, scaly, cracked glazed/shiny and fissured tender, reddish plantar surface of the forefoot
Juvenile Plantar Dermatitis
32
Yellowing or grayish, sharply emarginated macules covered with greasy scales
seborrheic dermatitis
33
areas of greater sebaceous activity
``` scalp eyebrows nasolabial areas pre- and post auricular axillae interscapular areas center of the chest ```
34
location of eczema: nipple, unilateral consider
Paget's disease
35
Diaper dermatitis differential if there no sparing of the intertriginous areas
Candidiasis
36
also known as discoid eczema; coin shaped, discrete, erythematous, edematous papuplovesicular plaques and patches commonly found in the legs, as well as back of the hands and fingers ( extremities and extensor)
Nummular dermatitis
37
most common risk for static dermatitis
Varicose
38
common among the elderly; due to skin dryness | dry skin with redness, scaling, fine crackles or fine superficial fissures "crazy paving"
asteatotic eczema
39
related to stress related and reported scratching | known as lichen simplex chronicus
neurodermatitis
40
Chronic disorder affecting adults. Multiple, firm, pruritic nodules localized to the extensor surface of the extremities
prurigo nodulari