My son has had a lingering cough for about a month. he feels totally fine and his energy level is great. will this go away on its own? or do i need to take him in to see a doctor? kid has cough

Some basics: A cough is a protective reflex designed to remove inhaled or accumulated debris from deeper regions of the lung.It is often seen in the excessive mucus flow of a URI but can be a sign of environmental irritant exposure,cough variant asthma or other issues. If it doesn't effect his activities or rest it is likely minor or would not benefit from a treatment. When it bugs you too much= doc visit