Final answer:
Management of intoxication presenting with belligerence, altered perception, ataxia, and other neurological signs likely involves supportive care and sedation, typically with benzodiazepines, while monitoring vital functions and ensuring patient safety.
Step-by-step explanation:
The management of a 20-year-old experiencing acute onset belligerence, distortion of body image, depersonalization, and cloudy sensorium following ingestion of a street drug, coupled with horizontal nystagmus, ataxia, and slurred speech without pupil dilation, can be complex. Given these symptoms, it is possible that the individual may have ingested a dissociative drug, such as phencyclidine (PCP) or a ketamine-like compound. These can cause acute changes in consciousness, impaired motor and sensory function, and altered perception of time and self, without causing pupil dilation. Management should be centered on ensuring patient safety and supporting vital functions. This may involve sedation, typically with benzodiazepines, to control agitation, monitoring of vital signs, fluid replacement if dehydration is present, and close supervision to prevent injury. It is crucial to seek immediate medical attention, as specialized care by healthcare professionals is essential in handling such situations.