Patient: Sometimes, ill be just sitting down and relaxing and, all of the sudden, my breathing changes. it feels kind of like suffocation, like a panic attack, but i know its not because when i have one i have more symptoms. it scares me. usually, how i fix it, is by taking a couple deep breaths and im usually okay for a while. but it causes me to get very lighy headed when i take deep breaths. sometimes, ill get light headed for no reason. is this asthma ?