The bronchi of asthma sufferers exhibit hypersensitivity to certain triggers which can bring on an asthma attack. During a severe episode the airways become so narrow it becomes extremely difficult, if not impossible, to breath. For some asthma is a minor problem, for others it can be life threatening. But many famous asthma sufferers have lived full and rewarding lives, among them are Ludwig van Beethoven, composer, Elizabeth Taylor, actress, John F. Kennedy , 35th President of the United States, and Jackie Joyner-Kersee, Olympic track and field athlete. The factors causing asthma symptoms can be different for each person with asthma.
Asthmatics are usually allergic to inhaled allergens, which act as an attack trigger.
The exact cause of the asthmatic airway hyper- reactivity is not known, but the role of genetic factors is currently under study. Another area of study is targeting the possible role of immune system responses to environmental allergens Many factors act as asthma triggers and the triggers vary from person to person. They may experience a tight feeling in the chest or chest pain. Symptoms often worsen at night, awakening the patient. This results in restlessness or sleep problems.