<prompt> Which one of the following is a symptom of ammonia intoxication?Slurring of speechAbdominal painDiarrheaConstipation  <response>: One of earlier symptoms of ammonia intoxication is haziness of vision and slurring of speech Other clinical features of urea cycle defects:- Increased blood glutamine Decreased BUN Blood Urea Nitrogen Cerebral oedema Vomiting Lethargy hyperventilation Note:-Severe ammonia toxicity can lead to coma and eventually death. 