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.
Coughing, recurrent bronchitis and shortness of breath, especially when exercising, are also ways that asthma appears. â¢ The two most common triggers of asthma in children are colds and allergens. â¢ Diagnosing the precise cause of asthma is sometimes difficult because two or more causes may be present in one child.
Some of these may be genetic. However, a number of environmental factors are thought to play a role in the development of asthma. These include air pollution, chlorine in swimming pools and modern hygiene standards (known as the  hygiene hypothesis ). There is currently not enough evidence to be certain whether any of these can cause asthma, although a variety of environmental irritants, such as dust, cold air and smoke, may make it worse.