<unk>  is an impairment of the<unk> <unk>  that occurs as a result of a number of diseases as well as head trauma. The<unk> <unk>  of the brain plays a key role in higher mental functions such as motivation, planning, social behaviour, and speech production. A<unk> <unk>  syndrome can result from a range of causes including head trauma, tumours, degenerative diseases,neurosurgery and cerebrovascular disease. Impairment of<unk> <unk>  functioning is also found in a range of psychiatric conditions including schizophrenia, attention deficit<unk>  and antisocial personality<unk> .<unk> <unk>  impairment can be detected by recognition of typical clinical signs, use of simple screening tests, and specialist neuropsychiatric testing.
Frontal lobe disorder
Impulse control disorder
Episodic dyscontrol syndrome
Tic disorder
Spectrum disorder
Childhood disintegrative disorder
Dissociative disorders
Provisional tic disorder