Anaphylaxis is a life-threatening type of allergic reaction. It is a severe, whole-body allergic reaction to a chemical that has become an allergen.

Programs + Services

Hives (Urticaria) Program

The Division of Allergy at Tufts Medical Center in Boston has an expert team of doctors to evaluate the cause and develop treatment plans for hives (urticaria).
More information about programs and services

Doctors + Care Team

John Leung, MD

John Leung, MD

Accepting New Patients

Virtual Appointments Available

Title(s): Director, Center for Food Related Diseases at Tufts Medical Center; Co-Director, Food Allergy Center at Tufts Children's Hospital; Allergist; Assistant Professor, Tufts University School of Medicine
Department(s): Medicine, Pediatric Allergy, Gastroenterology, Pediatric Gastroenterology
Appt. Phone: 617-636-5883 (Gastroenterology)
Fax #: 617-636-9292

Allergic rhinitis (seasonal allergy), anaphylaxis, angioedema, asthma, celiac disease, chronic urticarial (hives), drug allergies, eczema, eosinophilic esophagitis/eosinophilic gastrointestinal disorders, food allergy (e.g. peanuts, cow milk, soy, etc.), food intolerance (lactose, fructose, fructan), food protein-induced enterocolitis syndrome (FPIES), immunodeficiency, oral allergy syndrome, pruritus, sinusitis, stinging insect allergy, wheat hypersensitivity

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