Asthma is a chronic respiratory condition that affects the airways in the lungs. The symptoms of asthma can vary in severity and frequency from person to person, and may include: Wheezing: a high-pitched whistling sound that is made when breathing out. Shortness of breath: feeling like you can't catch your breath or take a deep breath. Chest tightness: a feeling of tightness or pressure in the chest. Coughing: especially at night or early in the morning. Rapid breathing: breathing faster than usual. Difficulty breathing: feeling like you can't breathe deeply enough. Fatigue: feeling tired or exhausted due to difficulty breathing. Trouble sleeping: difficulty falling asleep or staying asleep due to coughing, wheezing, or shortness of breath. Asthma symptoms may be triggered by a variety of factors, including allergens (such as pollen, dust mites, or animal dander), irritants (such as smoke, pollution, or strong odors), exercise, cold air, and respiratory infections. It's important to work with a healthcare provider to develop an asthma action plan to help manage symptoms and prevent asthma attacks.