A randomised controlled trial assessing symptom-driven versus maintenance preventer therapy for the outpatient management of asthma in children (The ASYMPTOMATIC study).


Asthma is the commonest long-term disease in children in the UK. It causes cough and difficulty breathing. The main treatment for asthma is a preventer inhaler, containing corticosteroids, which prevents irritation of the airways.

The ASYMPTOMATIC study aims to find out whether taking a preventer inhaler only when a child, with mild asthma, has symptoms is as effective as taking it every day.

The study will involve around 250 GP practices in England and around 2000 children and young people with asthma.


Study Metrics




GP practices open


GP practices in set up



NIHR - National Institute for Health Research logo
Alder Hey Children's NHS Foundation Trust logo
Liverpool Clinical Trials Centre logo
University of Liverpool logo
CPRD (MHRA) logo
Bangor University logo
Imperial College London logo
Usher institute logo
Asthma UK Centre for Applied Research logo