Breathlessness after Yawning

Patient: I am 19 years old female, 5’2″ height, weight 56 kg with no family history of asthma as such. Whenever I feel sleepy & yawn because of that I start experiencing difficulty in breathing. All the things like yawning a lot, difficulty in breathing, deep breaths, coughing & tears happens together which makes it very uncomfortable . During day time I don’t have any such problem if I’m not sleepy. Once I yawn, everything happens again. It last for about half an hour. I have this problem from past 8 years. I suffer from this for two nights or sometimes days in a week.

Symptoms: Breathlessness, coughing, tears from eyes, deep breaths

Doctor: