May 24, 2023

7 Things You Should Know About Cat Allergy Shots

Cat allergies are a common problem for many people, causing symptoms such as sneezing, itching, and congestion. While avoiding cats altogether may seem like the easiest solution, it is not always practical or desirable. For those who wish to keep their feline companions while managing their allergies, allergy shots may be a viable option. 

This method of treatment involves gradually exposing the body to small amounts of cat allergens in order to build up immunity and reduce symptoms over time. In this article, we will explore the ins and outs of allergy shots for cat allergies, including how they work, who they are suitable for, and what to expect during the treatment process.

What Causes Cat Allergies?

Cat allergies are caused by an overactive immune response to proteins found in cat saliva, urine, and dander (dead skin cells). When a person with a cat allergy comes into contact with these allergens, their immune system mistakenly identifies them as harmful and triggers an allergic reaction. This can result in symptoms such as sneezing, runny nose, itching, hives, and asthma.

How Do Cat Allergy Shots Work?

Allergy shots, also known as immunotherapy, work by gradually introducing small amounts of the allergen into the body over a period of several months or years. This helps the immune system to become desensitized to the allergen, reducing the severity of allergic reactions.

In the case of cat allergies, the allergen used in allergy shots is typically a purified extract of cat dander. The extract is injected under the skin, usually in the upper arm, and the dose is gradually increased over time. The goal is to reach a maintenance dose, which is usually given once a month, that provides long-term relief from symptoms.

Who Is a Good Candidate for Cat Allergy Shots?

Allergy shots may be a good option for people who have moderate to severe cat allergies and want to reduce their symptoms without having to give up their cat. They are most effective for people who have a specific allergy to cat dander, rather than other allergens.

Allergy shots are not recommended for people with certain medical conditions, such as severe asthma or heart disease, or for pregnant women. It is important to talk to a doctor or allergist to determine if allergy shots are right for you.

What Are the Risks and Side Effects of Cat Allergy Shots?

Allergy shots are generally safe, but there is a small risk of allergic reactions to the injection itself. Symptoms of a reaction may include swelling, redness, itching, and hives. In rare cases, anaphylaxis, a severe and potentially life-threatening allergic reaction, can occur.

Other side effects of allergy shots may include local reactions at the injection site, such as pain, swelling, and redness. Systemic reactions, such as sneezing, itching, and hives, may also occur, especially during the buildup phase of treatment.

It is important to stay at the doctor's office for at least 30 minutes after each injection to monitor for any reactions.

What Can I Expect During Cat Allergy Shot Treatment?

Allergy shot treatment typically involves two phases: the buildup phase and the maintenance phase.

During the buildup phase, which lasts about 3-6 months, the dose of the allergen is gradually increased with each injection. The frequency of injections may vary, but they are usually given once or twice a week.

Once the maintenance dose is reached, which usually takes about 6 months, the injections are given less frequently, typically once a month. The maintenance phase can last anywhere from 3 to 5 years, depending on the individual's response to treatment.

It is important to keep up with the recommended schedule of injections and to continue taking any other allergy medications as prescribed by a doctor. Over time, many people find that their cat allergy symptoms improve or disappear altogether.

What Are the Symptoms of Cat Allergies?

Symptoms of cat allergies can vary from person to person, but common symptoms include:

  • Sneezing
  • Runny or stuffy nose
  • Itchy, watery eyes
  • Scratchy throat
  • Coughing
  • Wheezing
  • Shortness of breath
  • Skin rash or hives

In severe cases, a cat allergy can cause an asthma attack, which can be life-threatening. If you experience difficulty breathing or chest tightness, seek medical attention immediately.

How Are Cat Allergies Treated?

The most effective way to treat a cat allergy is to avoid exposure to cats or cat dander. However, this may not be possible for some people, especially if they live with a cat or have frequent contact with cats. In such cases, there are several treatments available, including:

1. Medications

Antihistamines, decongestants, and nasal corticosteroids can help alleviate allergy symptoms, such as sneezing, runny nose, and itchy eyes.

2. Immunotherapy

This involves exposing the person to small amounts of the allergen over time, gradually increasing the dose to desensitize the immune system. This may involve allergy shots or sublingual immunotherapy (SLIT).

3. Air Purifiers

HEPA air purifiers can help remove allergens from the air, reducing exposure to cat dander.

4. Cleaning

Regular cleaning can help reduce the amount of cat dander in the home. This includes vacuuming carpets and furniture, washing bedding and curtains, and using a HEPA filter vacuum.

In severe cases, such as those with asthma, emergency medications may be necessary to treat an allergic reaction. It's important to discuss treatment options with your doctor or allergist.


Allergy shots for cat allergies have proven to be a highly effective treatment option for individuals suffering from severe allergic reactions to cats. These shots, also known as immunotherapy, work by gradually introducing small amounts of the allergen into the body to help build up a tolerance and reduce the severity of symptoms. 

While allergy shots require a significant time commitment and may not work for everyone, they offer a long-term solution for those who want to enjoy the company of cats without experiencing uncomfortable or life-threatening symptoms. As with any medical treatment, it is important to consult with a healthcare professional to determine if allergy shots are the right choice for you.

If you are looking for an allergy clinic online, contact Curex. We are proud to offer convenient allergy relief solutions. Get custom treatments to desensitize your body to your allergies when you consult today.

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