Numerous reasons that are not completely comprehended, the prevalence of the is on the rise globally. At the UK alone there are over 3 million sufferers.
One can be bronchospasms, where irritants have caused contraction of the lung muscles, thus narrowing the airways.
Just what exactly happens during an asthma attack
The external causes may be common allergens like pollen or dust, although emotional factors like excessive stress can occasionally come into play.
External and Internal Causes of Asthma