Causes of asthma are maintained more than one of the causes described below, first is genetic or hereditary cause, this cause is mainly developed by the family members which lead a way to suffer the disease with the future generations. If a grandfather has posed from asthma and there is a chance for the grand children to get symptoms and Causes of asthma. Second is the environmental factor, where the working environment makes a cause for asthma like the chemical exposures, industrial waste, dusts and pollens. These things can make a normal person to get into asthma due to continuous exposures of such environmental factors. The third factor for the Causes of asthma is due to the mental stress, even the continuous stress life can be a major cause for asthmatic behavior and the meditation can be a better solution for that cause. Fourth factor for Causes of asthma is due to the allergens, like pollens, air pollutants, cold air, physical exertion, exercise, sinusitis, smoking, second hand smoking, respiratory infections, and some medications like aspirins. The above causes may be the signs of allergic asthma, and has to be known. There may be some side effects of asthma drugs which should be taken out.