Asthma symptoms and warning signs can emerge in response to a variety of allergens and irritants. Each person has distinct triggers for their asthma, which can include:

• Airborne allergens such as pollen, dust mites, mold spores, pet dander or particles of cockroach waste
• Respiratory infections, such as the common cold
• Physical activity
• Cold air
• Air pollutants and irritants, such as smoke
• Certain medications
• Strong emotions and stress
• Sulfites and preservatives included into some foods and beverages, containing prawns, raisins, processed potatoes, beer, and wine.
• Gastroesophageal reflux disease (GERD), a condition in which stomach acids back up into your throat