RESUMEN La tos ocurre por la compleja acción del arco de la tos. En condiciones normales es ABSTRACT Cough occurs due to the complex action of the coughing arch. Under normal conditions it is essential to protect the airway. It is a very frequent symptom with a large of possible etiologies.The diagnosis process of patients with chronic cough can be a challenge. The most prevalent pathologies must be considered. Thus includes pharyngolaryngeal reflux and posterior discharge: both conditions that are part of the otorhinolaryngolocical area.In the present article review, we pretend to provide an updated approach and management to this condition, in order to asses relevant information to daily clinical practice.