Nasal obstruction or congestion happens when the nasal passages are blocked or when there is difficulty breathing through the nose. caused by factors such as colds, allergies, infections.
An otorhinolaryngologist is a doctor who specializes in the management and treatment of diseases of the ear, nose, throat and related structures of the head and neck.
Remember that for the proper selection of health professional that treats nasal obstruction you must consider the nature, severity and symptoms you are presenting.