Allergy Asthma and Immunology Non-Invasive Diagnosis and Therapy

Asthma triggered by exposure to the same substances that trigger allergy symptoms. An allergy is when the immune system mistakes a harmless substance, such as pollen, as dangerous. The body releases chemicals to attack the substance. An allergy affecting the lungs can lead to asthma symptoms such as wheezing and difficulty breathing. Allergens are substances that cause an allergic reaction. Allergens can enter the body by being inhaled, swallowed, touched or injected.

Common symptoms of asthma include :

• Frequent cough, especially at night
• Shortness of breath
• Wheezing
• Chest tightness, pain, or pressure