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Primary symptom of asthma patients is wheezing. Patients with allergies experience wheezing, almost always associate with the arrival of hay fever season. Symptoms: *A high pitch whistling sound and labored breathing, especially when exhaling; but may experience it during inhalation.
The whistling sound that characterizes wheezing occurs when air moves through airways that are narrowed, much like the way a whistle or flute makes music. In asthma, this airway narrowing is due to inflammation, mucus, and muscle spasms in the wall of the airways.