Regarding alcoholic gaze nystagmus, which one of the following is false: (A) It appears at blood alcohol levels of 50 - 100 mg %, (B) Horizontal gaze nystagmus is pathognomic of alcohol intoxication, (C) Positional alcohol nystagmus I occurs 30 minutes after ingestion, (D) Positional alcohol nystagmus II occurs 5 - 6 hours after ingestion
Answer is B. Alcoholic gaze nystagmus - It appears at blood alcohol levels of 50 - 100 mg % - Positional alcohol nystagmus I occurs 30 minutes after ingestion - Positional alcohol nystagmus II occurs 5 - 6 hours after ingestion - Horizontal gaze nystagmus is not pathognomic of alcohol intoxication, can occur in pathological conditions, ingestion of sedatives and transquillizers