Dr. John Simpson, MD

Oral Food Challenge - Diagnosing Food Allergies
Challenge testing is when an allergen is given to a patient in small doses under medical supervision to see if there is an allergic reaction. This test is commonly done to diagnose food and drug allergies. This test is the most accurate way to tell if a patient is allergic to a certain food or drug. A challenge test may also be considered to see if a patient has outgrown an allergy. What is an Oral Food Challenge? An oral food challenge (OFC) is a type of challenge test where a patient is ...

Are inhaled corticosteroids safe to use for my asthma?
Inhaled corticosteroids (ICS) are a type of medication that is commonly used to treat asthma and other respiratory conditions. They are considered safe because they are delivered directly to the lungs...

How do biologics work to treat my asthma?
Biologics are a class of medications that can be used to treat asthma, a chronic lung disease characterized by inflammation and narrowing of the airways. Biologics work by targeting specific parts of ...

How long does it take to get allergy relief from allergy shots
Allergy shots, also known as immunotherapy, is a treatment that can help to reduce the severity of allergic reactions by gradually exposing the body to increasing amounts of the allergen over time. Th...

I have COPD. What can help me breathe better?
Treatment for COPD can help improve breathing and slow the progression of the disease. Some treatments include:bronchodilators, which are medications that relax the muscles around the airways to help ...

What types of pollen trigger allergies?
Pollen is a fine powder that is released by trees, grasses, and weeds during the spring, summer, and fall. When these pollens come into contact with the eyes, nose, and lungs of people who are sensiti...