What are the clinical manifestations of toxic encephalopathy?

In the early stage of toxic encephalopathy, patients are generally accompanied by headache, dizziness, nausea and vomiting, fatigue, weakness, irritability, some patients will also be accompanied by hallucinations, hallucinations, disorientation and other symptoms; if the disease is more serious, patients will also be accompanied by convulsions, blurred vision, lethargy, and even coma symptoms.