Medical Expertise of Dr. John Simpson, MD
Dr. John Simpson is a board-certified Washington DC allergist who has been providing care to patients for a wide range of allergic and immunologic conditions for over 25 years.
Dr. Simpson served as Past President of the Greater Washington Allergy, Asthma, & Immunology Society, Allergy & Asthma Society of Virginia.
Tips & Wisdom
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 ...
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 ...
Patient Education Resources
Can video game usage lead to ADHD?
Attention-deficit/hyperactivity disorder (ADHD) is a complex disorder that is believed to be caused by a combination of genetic and environmental factors. While excessive video game use has been assoc...
Attention-deficit/hyperactivity disorder (ADHD) is a complex disorder that is believed to be caused by a combination of genetic and environmental factors. While excessive video game use has been assoc...
Eggplant makes my mouth itchy. Am I allergic to it?
If eating eggplant causes itching in your mouth, it is possible that you have an allergic reaction to it. Food allergies are caused by an abnormal response of the immune system to certain proteins fou...
If eating eggplant causes itching in your mouth, it is possible that you have an allergic reaction to it. Food allergies are caused by an abnormal response of the immune system to certain proteins fou...
How does bronchial thermoplasty work to treat asthma?
Thermoplasty is a minimally invasive procedure that uses heat to reduce the smooth muscle in the airways, which can help to open up the airways and make it easier to breathe. The procedure is typicall...
Thermoplasty is a minimally invasive procedure that uses heat to reduce the smooth muscle in the airways, which can help to open up the airways and make it easier to breathe. The procedure is typicall...
How is atopic dermatitis different from eczema?
Atopic dermatitis and eczema are often used interchangeably, but they are not exactly the same thing. Atopic dermatitis is a type of eczema.Eczema is a general term that refers to a group of condition...
Atopic dermatitis and eczema are often used interchangeably, but they are not exactly the same thing. Atopic dermatitis is a type of eczema.Eczema is a general term that refers to a group of condition...
I have asthma. Should I have an asthma action plan?
It's important for those with asthma to have an asthma action plan.An asthma action plan is a written document that outlines specific steps for managing asthma symptoms and preventing asthma attac...
It's important for those with asthma to have an asthma action plan.An asthma action plan is a written document that outlines specific steps for managing asthma symptoms and preventing asthma attac...
Education & Training
- Medical School: University of South Carolina School of Medicine
- Pediatric Residency: Children’s Hospital of Alabama
- Allergy Immunology Fellowship: Duke University; Cellular Immuno-Biology at University of Alabama Birmingham
