Acute laryngitis can occur in children as young as 7 years old. Acute laryngitis can be caused by a variety of reasons, such as infection, allergies, and overuse of voice. 1. Infection: 7-year-old children’s body resistance and immunity will be relatively poor, it is easier to be invaded by bacteria, Streptococcus pneumoniae and Haemophilus influenzae and other germs, when the body is invaded by these viruses, it will increase the body’s chances of suffering from acute laryngitis. And 7-year-old children are also more prone to whooping cough and measles and other infectious diseases, when the body suffers from these diseases will also increase the risk of acute laryngitis. 2. Allergy: 7-year-old children who are more sensitive and prone to allergies will also increase the chances of acute laryngitis. Because allergies can lead to edema of the mucous membrane of the patient’s throat, which can lead to acute laryngitis. 3. Excessive voice: 7-year-old children often like to shout or talk more, will make the throat in a dry state for a long time, will also trigger the occurrence of acute laryngitis. To sum up, 7-year-old children can also get acute laryngitis, but daily can through the development of good habits, diet and voice habits, can reduce the chances of children suffering from acute laryngitis.