Why does my throat feel dry and scratchy after using an indoor air heater?
1. Introduction A dry and scratchy throat after using an indoor air heater occurs because the heating process drastically lowers the relative humidity of the ambient air. Breathing this arid air rapidly evaporates the protective mucous layer lining the pharynx, exposing the underlying epithelial cells to mechanical friction and desiccation. The dehydrated cells shrink and … Read more