The plant's name is derived from ai, an Arabic word meaning "to burn", which reflects its tendency to cause burning and rawness. Its common name, fool's parsley, corresponds to its homeopathic use for inability to think clearly or concentrate. Aethusa chiefly affects the nervous system and gastrointestinal system. It is used to treat violent vomiting, pains, convulsions, and even delirium, which all lead to exhaustion and sleepiness. Babies suffering from an inability to digest milk and from diarrhea, especially when they are teething or in hot weather, are often helped by Aethusa. The remedy is also used to strengthen the mind when it is weak and when concentration is difficult.