About
Dr. Eric Stephen Leith is a dedicated Allergist / Immunologist, committed to providing expert care for patients of all ages with allergic or immunologic conditions. Practicing at an allergy and immunology clinic in Oakville in Oakville, ON, he is a trusted provider of specialized allergy and immunology care in the community. The clinic adheres to the standards set by the College of Physicians and Surgeons of Ontario (CPSO), ensuring high-quality, patient-centered care. Dr. Leith's role as a Allergist / Immunologist focuses on the diagnosis, treatment, and management of allergies, asthma, and disorders of the immune system. The facility is equipped with modern diagnostic tools and offers a welcoming environment for patients seeking comprehensive allergy and immunology services.
He earned his Medical Degree from the Royal College of Surgeons in Ireland School of Medicine in 1977, in Ireland. Following medical school, he completed residency training in Internal Medicine, followed by a specialized fellowship in Clinical Immunology and Allergy. With over 42 years of experience practicing as an Allergist / Immunologist since 1982, Dr. Leith brings extensive expertise to his practice. He is recognized as a RCPSC Specialist by the College of Physicians and Surgeons of Ontario (CPSO). His career is marked by a commitment to advancing patient health through precise diagnosis, personalized treatment plans, and the latest evidence-based approaches.
Dr. Leith’s professional philosophy centers on accurate diagnosis and personalized management of allergic and immunologic conditions. He is dedicated to empowering patients with knowledge about their health, providing education on self-management strategies, and utilizing the most current advancements in allergy and immunology. His focus is on improving quality of life by minimizing symptoms and preventing severe reactions. He collaborates closely with primary care physicians and other specialists to deliver comprehensive, integrated care. All communication and patient care are provided in English, with a strong emphasis on compassion and understanding.
Dr. Eric Leith provides expert diagnosis and management for a wide range of allergic and immunologic conditions, including:
Immunodeficiency Disorders
Dr. Leith manages can be primary (genetic) or secondary (acquired due to other conditions or treatments).
- Recurrent Infections (Evaluation for Underlying Immunodeficiency): Investigation of individuals who suffer from infections more frequently, severely, or for longer durations than expected.
- Humoral (Antibody) Deficiencies: Disorders where the body doesn't produce enough antibodies (immunoglobulins) to fight off infections effectively.
- Primary Immunodeficiency Diseases (PIDD): A group of over 400 rare, chronic disorders in which part of the body's immune system is missing or functions improperly.
Food and Drug Allergies
Dr. Leith manages accurate diagnosis through testing and challenges is crucial.
- Anaphylaxis (Severe Allergic Reaction): Requires immediate treatment with epinephrine and emergency medical care.
- Food Protein-Induced Enterocolitis Syndrome (FPIES): Common triggers include milk, soy, and grains.
- Drug Allergies (e.g., Penicillin, Sulfa Drugs): Adverse immune reactions to medications, manifesting as rashes, hives, fever, or more severe systemic reactions.
Respiratory Allergies
Dr. Leith manages includes allergic rhinitis (hay fever) and allergic asthma.
- Allergic Rhinitis (Hay Fever): Treated with antihistamines, nasal steroid sprays, and allergen immunotherapy.
- Allergic Asthma: Allergen immunotherapy may be beneficial for some patients.
- Allergic Conjunctivitis: Managed with eye drops (antihistamine, mast cell stabilizer) and allergen avoidance.
This list is not exhaustive. For a comprehensive evaluation of your condition, a consultation with Dr. Eric Leith is necessary.
- Management of Allergic Rhinitis (Hay Fever) and Sinusitis: Improving quality of life for patients with respiratory allergies.
- Recurrent Infection Evaluation: Development of strategies to reduce infection frequency and severity.
- Management of Urticaria (Hives) and Angioedema: Identification of potential triggers (allergic or non-allergic).
- Asthma Diagnosis and Management: Education on asthma triggers, self-management techniques, and action plans.
- Insect Sting (Venom) Allergy Diagnosis and Immunotherapy: Prescription of epinephrine auto-injectors.
- Food Allergy Diagnosis and Management: Evaluation for suspected food allergies using skin tests, blood tests, or oral food challenges (in a supervised setting).
Note: This list provides an overview. Specific diagnostic tests and treatment plans are determined after a thorough consultation with Dr. Leith.
All allergy and immunology services are provided in accordance with the standards of practice set by the College of Physicians and Surgeons of Ontario (CPSO) and relevant Canadian Society of Allergy and Clinical Immunology (CSACI) and relevant international guidelines. A referral from a physician is generally required for consultation.
Dr. Leith primarily practices at an allergy and immunology clinic located in Oakville, ON. The clinic is situated in the River Oaks, College Park neighborhood, offering easy access for patients. It is close to Coronation Park and accessible via Oakville Transit, making it convenient for patients from surrounding areas. The facility is well-equipped for allergy testing and consultations, providing a professional and supportive environment. Patients can usually find convenient parking nearby, ensuring a smooth visit for all who seek allergy and immunology care.
- What does an Allergist / Immunologist like Dr. Leith specialize in?
- An Allergist / Immunologist, such as Dr. Leith, is a medical doctor (MD) who has specialized training in diagnosing, treating, and managing allergies, asthma, and immunologic disorders. This includes conditions like hay fever, food allergies, eczema, hives, primary immunodeficiencies, and autoimmune diseases with immunologic components. a Allergist / Immunologist, specializing in the diagnosis, treatment, and management of allergies, asthma, and disorders of the immune system.
- How does Dr. Leith help manage food allergies?
- Dr. Leith provides comprehensive management for food allergies. This includes accurate diagnosis through testing (skin tests, blood tests, or oral food challenges), developing strict allergen avoidance strategies, educating on label reading, and creating an emergency action plan, including the prescription and training for epinephrine auto-injectors (e.g., EpiPen®). He may also discuss emerging therapies like oral immunotherapy if applicable. specializing in the diagnosis, treatment, and management of allergies, asthma, and disorders of the immune system.
- What is involved in an evaluation for a possible immunodeficiency by Dr. Leith?
- If an immunodeficiency is suspected (e.g., due to recurrent, severe, or unusual infections), Dr. Leith will conduct a thorough evaluation. This typically involves a detailed medical and family history, a physical examination, and specialized laboratory tests to assess different components of the immune system (like antibody levels, white blood cell counts and function). The goal is to identify any underlying immune system weakness and develop an appropriate management plan.
- Does Dr. Leith offer allergen immunotherapy (allergy shots/drops)?
- Yes, Allergist / Immunologists like Dr. Leith often prescribe and manage allergen immunotherapy. This treatment, available as allergy shots (subcutaneous immunotherapy or SCIT) or under-the-tongue tablets/drops (sublingual immunotherapy or SLIT for certain allergens), helps your body build tolerance to specific allergens over time, reducing symptoms of hay fever, allergic asthma, or insect sting allergies. He can determine if immunotherapy is a suitable option for you. specializing in the diagnosis, treatment, and management of allergies, asthma, and disorders of the immune system.
- When should I see an Allergist / Immunologist like Dr. Leith?
- A consultation with Dr. Leith is recommended if you need specialized allergy testing, are considering allergen immunotherapy (allergy shots/drops), have a suspected immunodeficiency, or require expert management for conditions like anaphylaxis, chronic urticaria, or complex allergic disorders. Your primary care physician can help determine if a referral is appropriate.
18-740, Ocular Oncology Service, 1011 Upper Middle Road East
Oakville, ON L6H 4L1
Office Phone: (905) 849-7007 | Office Fax: (905) 849-7883
Dr. Leith is a licensed Allergist / Immunologist regulated by the College of Physicians and Surgeons of Ontario (CPSO) under the Regulated Health Professions Act, 1991 and Medicine Act, 1991 in Ontario. A referral from a family physician or another specialist is generally required for a consultation with Dr. Leith, particularly for services covered by Ontario Health Insurance Plan (OHIP).
Verify Dr. Leith's registration with the College of Physicians and Surgeons of Ontario (CPSO): https://doctors.cpso.on.ca/DoctorDetails/Leith-Eric-Stephen/0025484-30307