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Question

Respiratory disease associated with excess histamine is

A
Bronchitis
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B
Emphysema
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C
Asthma
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D
All of the above
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Solution

The correct option is D Asthma
Symptoms of allergy-related asthma result from high levels of histamine in the bloodstream. The excessive histamine causes swelling of the mucosa that line the airways of the lungs, bronchial smooth muscle contractions in the lungs, and increased mucous secretion, which form plugs in the airway leading to symptoms such as difficulty in breathing, wheezing and chest tightness.

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