<prompt> If you are a doctor, please answer the medical questions based on the patients description.i want to know exactly what it is wrong with my 2 and half year old son has he has been occasionally having cough and cold and is unable to sleep at night. my doc presribed ventolin syrup sugar free for him and it relieved himwe had an xray done and his chest was clear.doe it means my son has asthma or we are preventing it.Doc also said we should have the drug handy at home. when he cant sleep his breathing is fast and you could see his chest stomach really rasing up and down very fast.  <response>: Hello, Thank you for asking at Chat Doctor. I went through your sons history and would like to make suggestions for him as follows:1. I would like to know his symptoms in great details before considering whether he has asthma. Furthermore, I would like to know more about him like - a. frequency of his respiratory symptoms b. since what age c. requirement of nebulization d. any gastric symptoms e. any other allergies f. family history of allergiesasthma etc. etc2. At present, I would suggest you to give him combination of montelukast and levocetirizine for 1 months. 3. It is true that for fast breathing and wheezing whistling sound from chest, some Chat Doctor. Were I treating you, I would suggest you to have albuterol in inhaler form with spacer and mask device or nebulizer at home, as it becomes effective earlier than an oral 