Contrary to the popular belief, asthma can begin at any age and is known as adult-onset asthma when it starts in adults. Asthma can be severe in adults as they may tend to ignore it for long. The presence of pre-existing conditions such as obesity, cardiac diseases, lung diseases, or any autoimmune disorders also tend to be the risk factors for developing asthma in adults. It is advised to not ignore your symptoms and consult a pulmonologist on time.