Dear doctor! I am 37 years old, often have chest pain that makes it difficult to breathe when inhaling and exhaling, especially when breathing in, my right chest hurts like a needle so I can't breathe. This phenomenon does not happen often, but usually occurs once every 3 to 4 weeks, each time 1 - 3 minutes, it goes away on its own. Normally, if I exercise vigorously or continuously, I will be very tired and have difficulty breathing, I also often feel tired. I am 1.51m tall and weigh 51kg. I usually do sports (badminton, volleyball, ...) and climb stairs every day. Please ask the doctor what is the symptom of shortness of breath, fatigue, chest pain like needles when exercising vigorously and constantly warning? Is it dangerous? How is the treatment? I thank you very much, Doctor!