Cough is one of respiratory tract diseases with common children. Because children bronchus mucous membrane is fragile, the ability that counteractive outside bacteria affects is low, consequently very incidental inflammation, cause cough. Accordingly, the doctor that has experience often can admonish namely parents, do not relieve a cough blindly, use prematurely relieve a cough medicine.
After because because phlegmy fluid or receptor of eyewinker stimulation respiratory tract are mixed,cough is,feeling nerve ending, pass the information that delays a head, reflection sex ground causes cough movement, outside the phlegmy juice that makes respiratory tract or eyewinker eduction body. Say from children physiology, cough is reflex of a kind of protection, having the effect that clean respiratory tract makes his expedite, want eduction of will phlegmy fluid only, cough often can alleviate by oneself.
And relieve a cough medicine can relieve a cough, because it can restrain cough reflex,be. But the respiratory system development as a result of children is still immature, cough reflex is poorer, add bronchus to be in charge of antrum stricture, hemal and rich, cilium motion is poor, phlegmy fluid is not easy eduction. If take,cough surely clear, cough United States fragrance or opiate relieve a cough medicaments, like licorice of medicine made of two or more ingredients piece, medicine made of two or more ingredients relieves a cough mixture, can cause phlegmy fluid a large number of retention are inside respiratory tract, pose tracheal block, occurrence bosom is frowsty difficulty of afflictive, breath, pulsation is accelerated wait for a phenomenon, even the disease such as infection of afterwards hair bacterium.