12. Even if the risk for acute severe asthmatic symptoms is low, a nebuliser for giving salbutamol and adrenaline for subcutaneous injection and equipment for intravenous administration of antiasthmatic drugs will be easily available.(The treatment scheme from the Norwegian Paediatric Association's acute therapy book will be applied.) Evaluation of the test results Percentage fall in FEV1 and FEF50 will be applied as a parameter of bronchial reactivity. More than 10% fall in FEV1 after cold air or more than 10% rise in FEV1 after inhalation of Ventolin, is considered significant.