Testing, discussion. Sometimes asthma is easy to spot. You start wheezing and having trouble breathing with exercise or viral illnesses. Or a chronic nighttime cough. However, if you aren't sure, such as a little tight cough after notable exercise, or if you're in the heat a lot, etc, then a visit to your doc can help. Sometimes pulmonary function testing (blowing into a special tube) can show if airflow is normal.
Easy. You have audible wheezing.
Trial. After you have been prescribed several rounds of antibiotics and otc cough suppressants failed, trial of bronchodilators may help. If definite wheezing noted on exam, inhaled steroid is in order and you will have your life back!