Depends on cause
Diffuse brain dysfunction - lack of focal findings
Focal brain dysfunction - hemiparesis, loss of motor tone, loss of ocular reflexes
Important to differentiate diffuse brain dysfunction from localized lesion as a patient may appear confused due to visual deficit, dysphasia, etc.
Diffuse brain dysfunction - lack of focal findings
Focal brain dysfunction - hemiparesis, loss of motor tone, loss of ocular reflexes
Altered mental status
Hypoxic encephalopathy
Sedation 
Acute toxic-metabolic encephalopathy 
Extrapyramidal reaction
Hypoglycemia
Tremor
Hyperosmolar state 