<unk> ing is viewed as a public health issue. A<unk>  is a protective reflex in healthy individuals which is influenced by psychological factors. The<unk>  reflex is initiated by stimulation of two different classes of afferent nerves, namely the myelinated rapidly adapting receptors, and nonmyelinated C-fibers with endings in the lung.
Cough
Phlegm
Sneeze
Voice change
Nasal congestion
Chills
Choking
Night Sweats