Abnormally Increased Behavioral Arousal
This is a state caused by withdrawal from alcohol or barbiturates, acute encephalitis, head trauma resulting in coma, partial seizures in epilepsy, metabolic disorders of electrolyte imbalance, Intra-cranial space- occupying lesions, Alzheimer's disease, rabies, hemispheric lesions in stroke and multiple sclerosis.
Anatomically this is a disorder of the limbic system, hypothalamus, temporal lobes, amygdala and frontal lobes. It is not to be confused with mania.
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