Long Term Effect of AIT in Children

The study will include children aged 5- 18 years who are treated with immunotherapy at Hans Christian Andersen Children' Hospital, Odense University Hospital. Informed consent to be registered in a database and to receive a questionnaire 5 and 10 years after end of treatment are obtained before start of immunotherapy. Base line data include information from the patient record: symptoms, medication, blood test and skin prick test results. During treatment effect, medication use, lung function and adverse events are monitored systematically once a year. The questionnaires 5 and 10 years after end of treatment will focus on allergy symptoms, use of medication and asthma symptoms.