<unk> , also known as desensitization or hypo-sensitization, is a medical treatment for environmental allergies, such as insect bites, and asthma.<unk>  involves exposing people to larger and larger amounts of<unk>  in an attempt to change the immune system's response. Meta-analyses have found that injections of<unk> s under the skin are effective in the treatment in allergic rhinitis in children and in asthma. The benefits may last for years after treatment is stopped. It is generally safe and effective for allergic rhinitis, allergic conjunctivitis, allergic forms of asthma, and stinging insects. The evidence also supports the use of sublingual<unk>  against rhinitis and asthma, but it is less strong. In this form the<unk>  is given under the tongue and people often prefer it to injections.<unk>  is not recommended as a stand-alone treatment for asthma. Side effects during sublingual<unk>  treatment are usually local and mild and can often be eliminated by adjusting the dosage. Anaphylaxis during sublingual<unk>  treatment has occurred on rare occasions. Potential side effects related to subcutaneous<unk>  treatment for asthma and allergic rhinoconjunctivitis include mild or moderate skin or respiratory reactions. Severe side effects such as anaphylaxis during subcutaneous<unk>  treatment are relatively uncommon. Discovered by Leonard Noon and John Freeman in 1911,<unk>  is the only medicine known to tackle not only the symptoms but also the causes of respiratory allergies. A detailed diagnosis is necessary to identify the<unk> s involved.
Allergen immunotherapy
Ozone therapy
Maggot therapy
Asthma spacer
Helminthic therapy
T-cell vaccination
Antigen-presenting cell vaccine
Aerosol-generating procedure