Question to the Department of Health and Social Care:

To ask the Secretary of State for Health, how many people in the UK have been diagnosed with (a) allergies, (b) asthma and (c) eczema in each of the last five years.

Annual incidence data for allergies, asthma and eczema is not collected.

NHS England's service specification for specialised allergy includes an estimate of 20 million people in the United Kingdom being affected by allergenic disease at some point in their lives. The severe asthma service specification includes an estimate of more than 5 million for the number in the UK affected by asthma.

Atopic eczema is the most common form of the condition, and the National Institute for Health and Care Excellence clinical guidance Frequency of application of topical corticosteroids for atopic eczema, published in 2004, suggests that it may affect 15–20% of school-age children and 2–10% of adults.