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.
Conditions Treated
Allergic Conjunctivitis
Allergic Contact Dermatitis
Allergic Rhinitis
Anaphylaxis (Anaphyactic Shock)
Asthma
Atopic Dermatitis
Food Allergy
Hereditary Angioedema (HAE)
Hives (Urticaria)
Sinusitis
Procedures & Services
Allergy Shots (Immunotherapy)
Allergy Tests
Epinephrine Auto-Injectors
Food Challenge Test
Lung Function Tests
Patch Testing for Contact Dermatitis
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
Could gluten be triggering my asthma?
There is some evidence to suggest that gluten, a protein found in wheat, barley, and rye, may be a trigger for asthma symptoms in some individuals. However, the relationship between gluten and asthma ...
There is some evidence to suggest that gluten, a protein found in wheat, barley, and rye, may be a trigger for asthma symptoms in some individuals. However, the relationship between gluten and asthma ...
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 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 ...
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 are treatments for my child’s asthma?
The treatment of childhood asthma is similar to that of adult asthma, but there are some important considerations.The main goal of treatment is to control symptoms, prevent exacerbations and improve t...
The treatment of childhood asthma is similar to that of adult asthma, but there are some important considerations.The main goal of treatment is to control symptoms, prevent exacerbations and improve t...
What is the treatment for severe asthma?
Severe asthma is a type of asthma that is characterized by frequent exacerbations, or "flare-ups," and difficulty controlling symptoms with traditional asthma medications. The treatment of s...
Severe asthma is a type of asthma that is characterized by frequent exacerbations, or "flare-ups," and difficulty controlling symptoms with traditional asthma medications. The treatment of s...
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
