Another common asthma symptom is wheezing. You might find yourself struggling to breathe due to the fact that your airways are closing over. What is actually happening here is that the tissue in the throat is becoming swollen, which in turn is creating an increasingly narrow passageway for oxygen to travel in and out. This can create a strange sensation when breathing (tickling or noisy) and it can likewise make it harder to breathe and to get enough oxygen in.
You may therefore find that many things that would normally be easy become more difficult. You might struggle to climb stairs or to continue exerting yourself during exercise for instance.
You may notice that this is worse during certain times of day, or following exercise. These are further clues that it might actually be asthma that is responsible.