The symptoms of ADHD are divided into three subtypes: 1-Inattentive 2- Hyperactive and 3- Combination Type.
In the new Diagnostic Statistical Manual of Psychiatric Disorders -DSM-5 published by the American Psychiatric Association the same 18 symptoms continue to be divided into these 2 subtypes in which at least 6 in one domain are required for the diagnosis of a specific subtype in children and adolescents.
Among the changes are the requirement that several symptoms were present prior to age 12 whereas formerly it was prior to age 7.
Only 5 symptoms are required in adults for a diagnosis of both I attention and hyperactivity.
It is now required that several symptoms occur in each of several settings.