Being mentally healthy during childhood means reaching developmental and emotional milestones and learning healthy social skills and how to cope when there are problems. Mentally healthy children have a positive quality of life and can function well at home, in school, and in their communities.
Mental disorders among children are described as serious changes in the way children typically learn, behave, or handle their emotions, which cause distress and problems getting through the day. Many children occasionally experience fears and worries or display disruptive behaviors. If symptoms are serious and persistent and interfere with school, home, or play activities, the child may be diagnosed with a mental disorder.
Symptoms of mental disorders change over time as a child grows, and may include difficulties with how a child plays, learns, speaks, and acts, or how the child handles their emotions. Symptoms often start in early childhood, although some disorders may develop during the teenage years. The diagnosis is often made in the school years and sometimes earlier; however, some children with a mental disorder may not be recognized or diagnosed as having one. (CDC)