Smoking or ingestion of marijuana can lead to intoxication, lethargy, impaired cognition, and impaired performance of complex activities such as operating a vehicle. High doses can also lead to paranoia, panic attacks, depression, confusion, vomiting, and hallucinations. If children accidentally ingest this plant or products made with it, this can lead to severe toxicity requiring hospitalization and major medical intervention. Symptoms of poisoning in a child are likely to include lethargy, a loss in balance and coordination, changes in speech, and elevated heart rate. Child poisoning is most likely to occur from accidental ingestion if marijuana products are in the home.