Asthma is characterized by sudden involuntary contraction of the tubes of the lungs
resulting in cough , suffocation and wheezing.the airways plugged with excessive ,thick mucus secretion produced by cells lining the airway.
Attack of asthma may last for only few minutes or may continue for hours or days. In rere & extreme cases asthma can even prove fatal.An attack of asthma can be feraful & exhausting experinece for sufferer & his family mambers.