Asthma symptoms vary from person to person. You may have infrequent asthma attacks, have symptoms only at certain times — such as when exercising — or have symptoms all the time. Asthma signs and symptoms include:  Shortness of breath Chest tightness or pain Wheezing when exhaling, which is a common sign of asthma in children Trouble sleeping caused by shortness of breath, coughing or wheezing Coughing or wheezing attacks that are worsened by a respiratory virus, such as a cold or the flu  Signs that your asthma is probably worsening include:  Asthma signs and symptoms that are more frequent and bothersome Increasing difficulty breathing, as measured with a device used to check how well your lungs are working (peak flow meter) The need to use a quick-relief inhaler more often  For some people, asthma signs and symptoms flare up in certain situations:  Exercise-induced asthma, which may be worse when the air is cold and dry Occupational asthma, triggered by workplace irritants such as chemical fumes, gases or dust Allergy-induced asthma, triggered by airborne substances, such as pollen, mold spores, cockroach waste, or particles of skin and dried saliva shed by pets (pet dander) 
asthma symptoms vary person person  may infrequent asthma attacks  symptoms only times — exercising — symptoms time  asthma signs symptoms include:  shortness breath chest tightness pain wheezing exhaling  common sign asthma children trouble sleeping caused shortness breath  coughing wheezing coughing wheezing attacks worsened respiratory virus  cold flu  signs asthma worsening include:  asthma signs symptoms frequent bothersome increasing difficulty breathing  measured device check well lungs working (peak flow meter) need quick-relief inhaler  people  asthma signs symptoms flare situations:  exercise-induced asthma  may worse air cold dry occupational asthma  triggered workplace irritants chemical fumes  gases dust allergy-induced asthma  triggered airborne substances  pollen  mold spores  cockroach waste  particles skin dried saliva shed pets (pet dander) 
asthma