Flushing of the face and neck, a metallic taste in the mouth, numbness of the hands and feet, palpitations, and an increased heart rate are the symptoms. These are the hallucinogenic mushrooms that alter consciousness. An intoxicated or hallucinogenic condition begins between 30 and 60 minutes after ingestion. The person may experience compulsive movements and uncontrolled laughter. Within 30 to 90 minutes of ingestion, sudden severe vomiting and mild to severe diarrhea with abdominal cramps occurs.
Symptoms generally last six hours.
In children, this may lead to dehydration severe enough to require hospital treatment. Symptoms may not develop until several days later. Not all mushrooms are poisonous. But several people have developed complete liver failure after eating the wrong mushrooms. They received liver transplants and will be taking anti-rejection drugs for the rest of their lives.