Stridor impedes the passage of air through the upper respiratory tract, accompanied by whistling noise. There are inspiratory (inhalation) and expiratory (exhalation) stridor. The most common congenital stridor is a disease that can only be detected from the first days of baby's life. It is characterized occur when the breath whistling noise, which is compared with the crow, purring of a cat. Some children inspiratory noise appears only when excited, cry, sucking and completely disappear in a calm state. The other he kept constantly persists and even increases during sleep. In congenital stridor the voice of the child remains clear, sonorous, the overall condition is not broken, physical development is normal, but with the emergence of catarrhal diseases of the upper respiratory tract symptoms stridor grow sharply, joins shortness of breath, cyanosis, indrawing in the breath of the soft tissues of the intercostal spaces chest, upper abdomen and jugular depression.
In congenital stridor the child has excessive softness laryngeal cartilages and congenital narrow entrance to the larynx. With the growth of the child larynx becomes wider, cartilage harder and manifestations of stridor gradually subside without treatment for 1-2 years of a child's life. Given the deterioration of accession catarrhal diseases of the upper respiratory tract, you need to care about overall proper development of children, prevention of colds with early tempering events.
Symptoms of stridor may be observed also in adults and children at the laryngospasm (spasm of the muscles of the larynx), stenosis of the larynx and trachea, tumors and cysts at the base of the tongue, zagadochnom abscess and other diseases. In this case, the appearance of stridor requires urgent establish its causes and treatment.