Cloudy atmosphere(meghambu), cold exposure and consumption (sheet sevana),direct exposure to air(prak-vata ), exposure to pollen and pollutants (raja), fumes(dhuma) and physical exertion (vyayama). | Cloudy atmosphere(meghambu), cold exposure and consumption (sheet sevana),direct exposure to air(prak-vata ), exposure to pollen and pollutants (raja), fumes(dhuma) and physical exertion (vyayama). |