Antihistamines and Adrenaline Quiz
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Questions and Answers

What is the main difference between urticaria and angioedema?

  • Urticaria is always accompanied by angioedema, while angioedema can occur separately
  • Urticaria causes itching, while angioedema does not
  • Urticaria involves edema in the superficial dermis, while angioedema involves deeper edema in the dermis and subcutaneous tissue (correct)
  • Urticaria is caused by physical agents, while angioedema is caused by internal diseases

Which of the following is NOT a common cause of urticaria?

  • Foods like nuts, eggs, and wheat
  • Exposure to ultraviolet light (correct)
  • Upper respiratory tract infections
  • Medications like penicillin and aspirin

Which of the following is the first-line treatment for acute urticaria?

  • Antihistamines (correct)
  • Oral corticosteroids
  • Epinephrine auto-injector
  • Immunosuppressants

When should epinephrine be used in the management of urticaria?

<p>Only when angioedema involves the airway (D)</p> Signup and view all the answers

Which of the following is a characteristic of chronic urticaria?

<p>Onset is less than 6 weeks (C)</p> Signup and view all the answers

What is the role of antihistamines in the treatment of urticaria?

<p>They provide symptomatic relief by blocking the histamine response (B)</p> Signup and view all the answers

Which of the following is true about autoimmune urticaria?

<p>It is caused by autoantibodies targeting IgE or FcεRIalpha (A)</p> Signup and view all the answers

Which of the following is a characteristic feature of urticaria lesions?

<p>Redness, swelling, itching, and disappearance within 4 hours (A)</p> Signup and view all the answers

Which of the following should be avoided in the treatment of urticaria?

<p>All of the above (D)</p> Signup and view all the answers

Which of the following is recommended for the treatment of urticaria?

<p>Antipruritic creams or lotions (C)</p> Signup and view all the answers

Which of the following is recommended as part of the dietary management of urticaria?

<p>A pseudo-allergic diet free of nuts, seafood, food dyes, salicylates, preservatives, and additives (B)</p> Signup and view all the answers

Which of the following diagnostic tests is recommended for urticaria?

<p>Complete blood count and erythrocyte sedimentation rate/C-reactive protein (D)</p> Signup and view all the answers

Which type of antihistamines do not cross the blood-brain barrier?

<p>Fexofenadine (B)</p> Signup and view all the answers

What is the recommended dose of adrenaline for adults with severe acute urticaria and angioedema?

<p>0.5-1 mg (A)</p> Signup and view all the answers

Which corticosteroid is commonly used in all types of urticaria?

<p>Prednisolone (A)</p> Signup and view all the answers

In a very severe case of urticaria with angioedema, what should be the first line of treatment?

<p>Adrenaline (i.m.deltoid) (A)</p> Signup and view all the answers

Which H2 antihistamine is commonly used in the treatment of urticaria?

<p>Famotidine (A)</p> Signup and view all the answers

For how long should an oral H1 antihistamine be taken to treat acute urticaria?

<p>$3$ weeks (C)</p> Signup and view all the answers

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