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Overview

Allergy Immunotherapy — also known as Desensitization Therapy — is a scientifically proven treatment that helps reduce or eliminate allergic reactions by gradually training the immune system to tolerate allergens that cause symptoms. It is used to treat nasal allergies (allergic rhinitis), asthma, dust mite and pollen allergies, insect venom allergies, and some pet or mold sensitivities.

At Baby Memorial Hospital (BMH), allergy immunotherapy is delivered through personalized treatment plans and is recommended to provide long-term relief from chronic allergic conditions.

What is allergy immunotherapy?

Allergy immunotherapy involves administering patients small, controlled doses of the allergen (the substance causing the allergic reaction) via injection or oral drops/tablets, to help the immune system build tolerance over time. Instead of only relieving symptoms (like antihistamines or nasal sprays do), immunotherapy works at the root cause of allergies — helping to retrain the immune system and reduce allergic responses.

When is allergy immunotherapy recommended?

Your doctor may recommend immunotherapy if you have:

  • Allergic rhinitis or hay fever (caused by pollen, dust, or molds)
  • Allergic asthma triggered by environmental factors
  • Insect sting allergies (bee, wasp, ant)
  • Recurrent sinusitis linked to nasal allergies
  • Poor response to regular allergy medications

Immunotherapy is suitable for both adults and children (above 5 years) who suffer from chronic or seasonal allergies.

How does allergy immunotherapy work?

Immunotherapy works by modifying your immune system’s response to allergens. It happens in two phases:

Build-up Phase (Desensitization Phase)
  • Small doses of the allergen are given at regular intervals (weekly or biweekly).
  • The dose is gradually increased over several months until the target level is reached.
Maintenance Phase
  • The same effective dose is continued at longer intervals (every 2–4 weeks).
  • This phase lasts for 3–5 years, allowing the immune system to “learn” tolerance and prevent allergic reactions.

By the end of treatment, many patients experience lasting improvement even after stopping therapy.

What are the different types of allergy immunotherapy?
TypeMethodCommon Use
Subcutaneous Immunotherapy (SCIT)Injections under the skinDust mites, pollen, molds, insect stings
Sublingual Immunotherapy (SLIT)Drops or tablets placed under the tongueDust mites, pollen, pet dander

At BMH, both SCIT and SLIT are available based on your allergy profile, preferences, and treatment goals.

Is allergy immunotherapy safe?

Yes. Allergy immunotherapy is safe and effective when performed under the supervision of qualified allergists. Mild reactions (like local redness or itching at the injection site) may occur initially but are usually short-lived. Serious reactions (systemic allergies or anaphylaxis) are extremely rare, and all sessions are conducted in a controlled hospital setting for safety.

What are the benefits of allergy immunotherapy?
  • Treats the underlying cause of allergies, not just symptoms
  • Long-lasting relief even after therapy completion
  • Reduces dependence on antihistamines and nasal sprays
  • Improves sleep quality, focus, and productivity
  • Can prevent the progression of allergic rhinitis to asthma
  • Enhances overall quality of life
Who provides allergy immunotherapy?

Allergy immunotherapy is provided by a multidisciplinary team that includes:

  • Allergists and ENT specialists
  • Respiratory medicine physicians
  • Immunologists and clinical pharmacists
  • Specialized nursing and monitoring staff

Each patient undergoes a thorough allergy testing and evaluation before starting therapy to ensure safety and personalization.

What is the duration of treatment and recovery like?
  • Initial evaluation: Includes allergy skin or blood tests to identify triggers.
  • Treatment period: Usually 3–5 years for lasting results.
  • Follow-up: Regular monitoring every few months to track progress.
  • Improvement: Noticeable symptom reduction often within 6–12 months.

Patients can continue normal daily activities during treatment, as it is typically outpatient-based.

Is immunotherapy a permanent cure for allergies?

While immunotherapy may not “cure” allergies completely, it provides long-term remission for most patients. Many experience significant improvement that lasts for years after completing therapy — reducing or even eliminating the need for regular medications.

Connect with Our Experts Today

If you suffer from persistent allergies, nasal congestion, or seasonal breathing difficulties, the Allergy Specialists at Baby Memorial Hospital (BMH) offer advanced Allergy Immunotherapy for safe, long-term relief.

👉 Book an Appointment Online or visit BMH to consult our allergy experts and begin a personalized desensitization program designed for lasting results.

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