Type

Hyperactive

Hypoactive

Mixed

Alertness

Hyperalert, agitated

Hypoalert, lethargy

Agitated periods and lethargy

Symptoms

Hallucinations, psychomotor agitation, delusion

Somnolent,decayed, bradypsychic

Combination of symptoms

Causes

Abstinence syndrome, Steroid use

Metabolic encephalopathies, benzodiazepine,poisoning, dehydration

Metabolic encephalopathies

Physiopathology

Elevate or normal brain metabolism, normal o rapid EEG, decreased GABA ergic activity

Decrease brain metabolism. EEC: diffuse slowing. Over stimulation of GABA systems.

Combination of GABA receptor stimulation and inhibition