Symptoms of this disorder manifest before the child enters the school…

The correct answer is Option (4) → Neurodevelopmental Disorders

Option (1) Hallucination — Incorrect. A hallucination is a perception that occurs in the absence of external stimuli, such as hearing voices; it is a symptom, most common in schizophrenia, not a category of disorders of childhood.

Option (2) Eating Disorders — Incorrect. Eating disorders such as anorexia nervosa, bulimia nervosa and binge eating centre on food, body weight and body image. They are of special interest to young people, but they are not defined by an onset before or at the start of school.

Option (3) Schizophrenia — Incorrect. Schizophrenia is a psychotic disorder in which personal, social and occupational functioning deteriorate through disturbed thinking, strange perceptions and unusual emotional states. It is a single disorder, not a category that starts in early childhood.

Option (4) Neurodevelopmental Disorders — Correct. A common feature of the neurodevelopmental disorders is that they manifest in the early stage of development; often the symptoms appear before the child enters school or during the early stage of schooling. They are characterised as deficits or excesses in a particular behaviour or delays in achieving an age-appropriate behaviour. ADHD, autism spectrum disorder, intellectual disability and specific learning disorder belong here.