 In cases of serious poisoning the mushroom causes <unk> , somewhat similar in effect to <unk> poisoning ( such as that caused by <unk> <unk> ) , characterised by bouts of marked agitation with confusion , hallucinations , and <unk> followed by periods of central nervous system depression . <unk> and coma may also occur in severe <unk> . Symptoms typically appear after around 30 to 90 minutes and peak within three hours , but certain effects can last for several days . In the majority of cases recovery is complete within 12 to 24 hours . The effect is highly variable between individuals , with similar doses potentially causing quite different reactions . Some people suffering intoxication have exhibited <unk> up to ten hours afterwards . <unk> <unk> and <unk> can result following recovery . 
