Credit Odd Andersen/Agence France-Presse â Getty Images. 1  MOSCOW â President Vladimir V. Putin of Russia and President-elect Donald J. Trump spoke by telephone for the first time on Monday, agreeing to review what both consider the poor state of relations between the two countries, according to a statement from the Kremlin.
Asthma in Children. Asthma in Children. The cause of asthma is unknown. Health experts believe that inherited, environmental, and immune system factors combine to cause inflammation of the bronchial tubes , which carry air to the lungs. This can lead to asthma symptoms and asthma attacks. Family history. Asthma may run in families (inherited).
Asthma is caused by chronic (ongoing, long-term) inflammation of these passages. 1  When the inflammation is triggered by any number of external and internal factors, the passages swell and fill with mucus.  Muscles within the breathing passages contract (bronchospasm), causing even further narrowing of the airways.