Allergen immunotherapy: who it suits and how long it takes
Allergen immunotherapy is currently the method that may change the natural course of allergic disease, but it takes a long time and only suits certain people.
How it works
Allergen extracts are given in gradually increasing doses. This helps the immune system get used to them and lowers the strength of the reaction on later contact. It treats the cause, rather than just easing symptoms.
Who it suits
It is mainly used for allergic rhinitis and mild to moderate asthma caused by inhaled allergens such as house dust mite and pollen, and for some insect sting allergies. Whether it suits you needs to be assessed by a specialist doctor. It is not suitable if asthma is not controlled, or with serious heart and blood vessel disease, and in some other situations.
Course of treatment and the reality
A full course usually lasts 3-5 years. It takes several months to start working, and follow-up visits cannot be missed during this time. Results differ from person to person, and it cannot be guaranteed that symptoms will never come back. It is better to see it as a "long-term investment" rather than a "quick fix", so your expectations stay realistic.
How it relates to medicines
Allergen immunotherapy cannot fully replace medicines that ease symptoms. The two are often used together. Whether to start it, and when to start, should be decided after talking it through fully with a specialist doctor.
This article is for general information only and is not medical advice. Please follow your doctor's instructions.
This article is for general information only and is not medical advice. If your symptoms affect daily life, please see a doctor.