Why am I so breathless?
The primary reason, why asthma (breathlessness, respiratory allergy, wheeze) develops in some people and not in others, is not well understood. However, certain risk factors have been identified that make a person more prone to develop this condition. Conversely, it must be noted that not all cases develop asthma in spite of the presence of risk factors.
One of the strongest risk factors for asthma is a combination of genetic tendency and exposure to allergens / irritants. The allergens or irritants form a large group and some of the common ones are mentioned here:
Apart from allergens/irritants, there are other things that can trigger an asthmatic attack: