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In children, ADHD occurs with other disorders about two-thirds of the time. [73] Other neurodevelopmental conditions are common comorbidities. Autism spectrum disorder (ASD), co-occurring at a rate of 21% in those with ADHD, affects social skills, ability to communicate, behaviour, and interests.
The scientific study of the causes of developmental disorders involves many theories. Some of the major differences between these theories involves whether environment disrupts normal development, if abnormalities are pre-determined, or if they are products of human evolutionary history which become disorders in modern environments (see evolutionary psychiatry). [5]
Since childhood disintegrative disorder (CDD) has a very similar set of symptoms and high comorbidity it can be misdiagnosed as childhood schizophrenia, which can lead to prescribing ineffective medications. [52] Childhood schizophrenia can be difficult to diagnosis simply because of how many disorders mimic the symptoms of CS.
There are a variety of disabilities affecting cognitive ability.This is a broad concept encompassing various intellectual or cognitive deficits, including intellectual disability (formerly called mental retardation), deficits too mild to properly qualify as intellectual disability, various specific conditions (such as specific learning disability), and problems acquired later in life through ...
People with classic ADHD are more likely to be rejected in these situations because of their social intrusiveness or aggressive behavior. Compared to children with CDS, they are also much more likely to show antisocial behaviours like substance abuse, oppositional-defiant disorder or conduct disorder (frequent lying, stealing, fighting etc.). [18]
DAMP is diagnosed on the basis of concomitant attention deficit/hyperactivity disorder and developmental coordination disorder in children who do not have a severe learning disability or cerebral palsy. In clinically severe form, it affects about 1.5% of the general population of 7-year-old-children; 3-6% are affected by more moderate variants.
Schizophrenia is a mental disorder that most commonly affects social and emotional functioning. Besides emotional and psychological influences, it is believed that genetics and early development play a role in the onset of schizophrenia. [8] The physical aspects of the disease are actual differences in the brain of the affected.
Neurodevelopmental disorders are a group of mental conditions affecting the development of the nervous system, which includes the brain and spinal cord.According to the American Psychiatric Association Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, published in 2013, these conditions generally appear in early childhood, usually before children start school, and can ...