Age

0–3

Sex

ALL

Healthy volunteers

Not accepted

Infant between 6 and 36 months
More than 3 wheezing episodes
Questionary and biological assessment for recurrent wheeze
Signature of the consent by 2 parents or by the only one of 2 parents (if this last one is the only present in the inclusion of the child)

Infant with respiratory disease in neonatal period
Infant with other obstructive pathology (cystic fibrosis, Primary Ciliary Dyskinesia,…)
Infant who have a respiratory infection less than 4 weeks
Infant with asthma exacerbation or who still have corticosteroid treatment
Infant without social security from their parents

Is the Exhaled Nitric Oxide in Infants a Predictive Marker of Asthma ?