Antihistamines and Adrenaline Quiz

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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?

Only when angioedema involves the airway Signup and view all the answers

Which of the following is a characteristic of chronic urticaria?

Onset is less than 6 weeks Signup and view all the answers

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

They provide symptomatic relief by blocking the histamine response Signup and view all the answers

Which of the following is true about autoimmune urticaria?

It is caused by autoantibodies targeting IgE or FcεRIalpha Signup and view all the answers

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

Redness, swelling, itching, and disappearance within 4 hours Signup and view all the answers

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

All of the above Signup and view all the answers

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

Antipruritic creams or lotions Signup and view all the answers

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

A pseudo-allergic diet free of nuts, seafood, food dyes, salicylates, preservatives, and additives Signup and view all the answers

Which of the following diagnostic tests is recommended for urticaria?

Complete blood count and erythrocyte sedimentation rate/C-reactive protein Signup and view all the answers

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

Fexofenadine Signup and view all the answers

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

0.5-1 mg Signup and view all the answers

Which corticosteroid is commonly used in all types of urticaria?

Prednisolone Signup and view all the answers

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

Adrenaline (i.m.deltoid) Signup and view all the answers

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

Famotidine Signup and view all the answers

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

$3$ weeks Signup and view all the answers