A<unk>  in Tamworth, New South Wales, Australia<unk>  is the triggering of an asthma attack by environmental conditions directly caused by a local<unk> . It has been proposed that during a<unk> , pollen grains can absorb moisture and then burst into much smaller fragments with these fragments being easily dispersed by wind. While larger pollen grains are usually filtered by hairs in the nose, the smaller pollen fragments are able to pass through and enter the lungs, triggering the asthma attack.
Thunderstorm asthma
Yokkaichi asthma
Brittle asthma
Cardiac asthma
Reactive airway disease
Mineral dust airway disease
Asthma
Occupational asthma