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Dermatology > Urticaria > Flashcards

Urticaria Flashcards

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Dermatology Board Prep flashcards
1
Q

Define urticaria

A

Appearance of intensely itchy erythematous plaques (hives) appearing as palve, itchy, blanching swellings of dermis

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2
Q

What are types of urticaria?

A

Acute: < 6 weeks

Chronic: > 6 weeks.

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3
Q

What are causes of urticaria?

A

Infections
Allergens e.g. food, latex, medication
Systemic disease

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4
Q

What are the different molecular causes of urticaria?

A

Type 1 hypersensitivity reaction IgE

Non-immune mediated, direct mast cell degranulation

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5
Q

What are urgent considerations in patients with urticaria?

A

Anaphlaxis
Angioedema

Both can cause airway obstruction and death.

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6
Q

What Ix in urticaria?

A 
Skin prick (possible allergens)
Blood RAST: IgE antibodies
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7
Q

What is Rx of urticaria?

A

Antihistamines

Steroids

Immunosuppression

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Dermatology (14 decks)

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