What Causes Severe Asthma Attacks: Allergies, Exercise, Heartburn, Medications, Weather, Smoking, Sinusitis. During an asthma attack, the airways become inflamed. The muscles around the airways contract and the airways produce extra mucus, which causes the respiratory tract (bronchial tubes) to narrow.

It is important to remember that liver and bladder problems are different, and while both can be treatable, the liver is more likely to be the cause of a bladder problem.