The voice box or larynx is at the base of the throat. The cough reflex resides there and is a protective response to prevent saliva or food from entering the lungs. Anything that irritates the larynx can cause that tickle sensation that leads to a cough with little stimulation. The usual causes of this irritation are acid reflux from the stomach and post nasal drip from allergies. treating both of these will usually eliminate the cough.
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