Other findings include hyperventilation, tachycardia and hyperactivity. As toxicity progresses, there may be agitation, delirium, hallucinations, convulsions, lethargy and stupor. With the large ingestion of the aspirin, which is an acid, the temperature may rise from the severe acidosis that increases metabolic rate. Hyperventilation may be present from the attempt of the body to rid the acid via carbon dioxide.