This toxic, common toadstool is called fly agaric because it is used to kill flies. It is highly poisonous and hallucinogenic and was used by Siberian medicine men to encourage visionary states. This is an important homeopathic remedy for chilblains and nervous disorders in which jerking, twitching, trembling, and itching are predominant, for example in epilepsy, and chorea. It is also given for delirium tremens associated with alcoholism and for the effects of senile dementia, or when there is marked dizziness, an impulse to fall backward; redness and puffiness of the face without heat, and an increase in appetite. Those who need Agaricus are sensitive to the cold, particularly when ill.