Liwen goes to the doctor and states that he believes that he may be experiencing hallucinations. The doctor asks Liwen to describe his experience to determine if this is what he might be experiencing. What is one description that Liwen might presentLiwen might tell his doctor that he hears a voice calling his name when no one is around.Liwen might indicate that he believes he is a bird and can fly high above a building.Liwen might state that he can go days without eating, bathing, or sleeping.Liwen might tell his doctor that he cannot seem to concentrate on one thing for a period of time.