A 7-year-old boy was brought to emergency, showing the following symptoms: Bizarre behavior,delirium(facial flushing,clear lungs, no wheezing rales high heart rate, absence of bowel sounds ,distended abdomen and full bladder, hot dry skin, no lacrimal or salivary secretions, very high fever, dilated pupils. His mother said he had swallowed some wild fruit in the field.Please answer the following questions:
· (1) What kind of poison may caused these symptoms?· (2) Explain why the boy had above symptoms?· (3) How to rescue?