March 2021: In recommendations 1.10.1 and 1.10.5, we clarified that approaches to minimising indoor air pollution and reducing exposure to outdoor air pollution should be included in a personalised action plan because pollution can trigger and exacerbate asthma. We added links to the NICE guidelines on air pollution: outdoor air quality and health and indoor air quality at home in recommendation 1.10.1.
February 2020: We reviewed the evidence on increasing the dose of inhaled corticosteroids within a self-management programme in children and young people with asthma and removed a recommendation. We made new recommendations on self-management in children and young people. These recommendations are marked .
Recommendations marked  last had an evidence review in 2017. In some cases minor changes have been made to the wording to bring the language and style up to date, without changing the meaning.