While there is no single medical, physical, or genetic test for<unk> , an evaluation can be provided by a qualified mental health care professional or physician who gathers information from multiple sources. These can include<unk>  symptom checklists, standardized behavior rating scales, a detailed history of past and current functions including the person's history of childhood behavior and school experiences, and information obtained from family members, friends, or significant others. The evaluations also seek to rule out other conditions or differential diagnoses such as depression, anxiety, or substance use disorders. Other diseases such as hyperthyroidism may exhibit symptoms similar to those of<unk> , and it is imperative to rule these out as well. Autism is sometimes mistaken for<unk> , due to impairments in executive functioning found in some people with autism. However, autism also typically involves difficulties in social interaction, restricted and repetitive patterns of behavior and interests, and problems with sensory processing, including hypersensitivity. Along with this, the quality of diagnosing an<unk>  with<unk>  can often be skewed being that the majority of<unk> s with<unk>  also have other complications, ranging from anxiety and depression to substance abuse. Formal tests and assessment instruments such as IQ tests, standardized achievement tests, or neuropsychological tests typically are not helpful for identifying people with<unk> . Furthermore, no currently available physiological or medical measure is<unk> ive diagnostically. However, psycho-educational and medical tests are helpful in ruling in or out other conditions (e.g. learning disabilities, allergies) that may be associated with<unk> -like behaviors. The use of neuroimaging is also steadily increasing to help in an<unk>  diagnosis. Some of these include: * single-photon emission computed tomography (SPECT) * positron emission tomography (PET) * functional magnetic resonance imaging (fMRI) United States medical and mental health professionals follow the Diagnostic and Statistical Manual of Mental Disorders (DSM) of the American Psychiatric Association; the International Classification of Diseases (ICD) published by the World Health Organisation (WHO) is often used by health professionals elsewhere. Until recently<unk>  in<unk> s was considered as a continuation of child-onset<unk> . It is now established, however, that also an<unk> -onset version exists. In a large longitudinal study from 2015 it was found that 28 of the 31 persons who had an<unk> -diagnosis at the age of 38 never had received an<unk> -diagnosis when tested at the ages of 11, 13 and 15.
Adult attention deficit hyperactivity disorder
Attention deficit hyperactivity disorder
Tourette syndrome
Motivational deficiency disorder
Obsessive–compulsive disorder
Conduct disorder
Oppositional defiant disorder
Frontal lobe disorder