How Immunotherapy Works for Long-Term Allergy Relief

A nose that won’t stop dripping, itchy eyes, wheezing, and headaches that can cloud your thinking. For many people, this is a reality for several months out of the year and perhaps all year if you live in a certain area. The predictable allergy cycle includes breathing in an allergen, causing your body to make IgE antibodies, those antibodies signaling mast cells and basophils, and then histamine and inflammation rushing in with familiar symptoms. 

Allergies are also incredibly common, with one in four adults being formally diagnosed with seasonal allergies and likely many more going undiagnosed. Most treatments help you feel better by blocking the signals that cause sneezing, congestion, and itching. However, allergy immunotherapy is different because it works by introducing tiny doses of the allergen so your immune system can gradually learn to respond with less panic over time. 

Continue reading to learn how allergy desensitization works, how long it usually takes, and where to find the best allergy doctor in Los Angeles for treatment.

How Does Allergy Immunotherapy Work?

Allergy immunotherapy works by giving your immune system small doses of the very thing that sets it off, almost like turning the volume knob down one click at a time. Instead of being hit with a sudden cloud of pollen that makes your nose sting and your eyes water, the exposure is slow and controlled, often so subtle you barely feel it. Over time, your immune system stops responding to the allergens in a negative way. 

The IgE antibodies that once reacted fast and aggressively become less active, and other antibodies, often called IgG4, step in to help block the allergen before it can trigger symptoms. This gradual change builds tolerance, which means your body learns that the allergen is not a threat. 

Allergy Shots vs. Sublingual Immunotherapy: Which Treatment Option is Better? 

Choosing between allergy shots and sublingual immunotherapy comes down to finding which treatment fits better into your daily life and which allergens you are reacting to. 

• Allergy shots are given at a clinic, where a quick injection is followed by a short waiting period while the clinical staff makes sure you feel fine. This treatment has been used for decades and can treat a wide range of environmental triggers. 
• Sublingual immunotherapy, or SLIT, works differently. The tablet melts under your tongue, where it may tingle or itch for a few minutes before dissolving. These tablets are taken on a set schedule at home, though they are only available for certain allergens, including pollen. 

How Long Does Immunotherapy Take to Work?

Allergy immunotherapy takes time to work; that pace is part of why it works so well. Treatment usually starts with a build-up phase, where doses are given weekly or several times a week and gradually increased. These early visits get your body used to the allergen without triggering a full allergic reaction. Once the right dose is reached, treatment moves into maintenance, where visits are spread out, and the dose stays the same. This is when many people notice the most change in how severe and how often symptoms occur. 

Most people notice improvement a few months after starting treatment, though the greatest relief usually doesn’t occur until around a year into maintenance. For lasting results, maintenance is usually continued for three to five years.

Is Allergy Immunotherapy Safe?

Allergy immunotherapy has a strong safety record. With allergy shots, the most common reaction is local, like a small raised bump, warmth, or itch at the injection site that can feel similar to a mosquito bite and usually fades within hours. Sublingual immunotherapy tablets can cause a scratchy or tingly feeling in the mouth or throat, especially at the start, which often settles as your body adjusts. 

With either treatment, more serious reactions can happen, though they are uncommon. This is why it’s so important to get allergy treatment from the best allergy doctor in Los Angeles, who can listen for changes in breathing or watch for spreading hives. People with asthma or a history of anaphylaxis are usually watched even more closely and given instructions on what to do if a delayed reaction occurs.

Is Allergy Desensitization Therapy Right for Me?

Allergy desensitization therapy is a good fit for people who deal with ongoing nasal allergies every allergy season or throughout the year. Immunotherapy could also be right for you if you want to rely less on daily allergy medication or nasal sprays over time. This treatment works best for environmental allergens like pollen, dust mites, and animal dander, which are identified through allergy testing and matched carefully to your symptoms. 

Not everyone is an ideal candidate, though. People with poorly controlled asthma, certain medical conditions, or medications that affect the immune system may need a different approach or closer monitoring. That is why a thorough evaluation with the best allergy doctor in Los Angeles is important.

Can Immunotherapy Fully Cure Allergies?

Allergy immunotherapy is not a quick fix or a guaranteed cure, though for many people it provides long-term relief where reactions are less severe and less frequent. Many people continue to feel better even after treatment ends because their immune system has learned to stay calm around the trigger. 

Finding the Best Allergy Doctor in Los Angeles for Effective Allergy Desensitization Treatment

Allergies can shrink your world, causing you to avoid outdoor gatherings, struggle with getting restful sleep, or having to take medications just to get through the day. If you’re tired of chasing allergy symptoms with another pill, you can find the best allergy treatment in Los Angeles with Dr. Daneshrad. 

At our state-of-the-art clinics in Santa Monica and Torrance, we can help you develop an allergy desensitizing plan that fits your life and your triggers, including in-office allergy shots and sublingual immunotherapy drops you take at home.