User:Mr. Ibrahem/Hallucination
Perception in the absence of external stimulation that has the qualities of real perception / From Wikipedia, the free encyclopedia
A hallucination is where someone senses things that do not exist.[1] They fell like normal perceptions in their vividness and cannot be controlled.[4] The senses potentially involved include seeing, hearing, tasting, and feeling.[1] People may become frightened or paranoid as a result.[1]
Hallucination | |
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My eyes at the moment of the apparitions by August Natterer, a German artist who created many drawings of his hallucinations. | |
Specialty | Psychiatry |
Symptoms | Sensing things that do not exist[1] |
Causes | Drugs, medications, schizophrenia, dementia, vision loss, extreme tiredness[1] |
Differential diagnosis | Dreaming, pseudohallucination, illusion, imagination[2] |
Treatment | Depends on the underlying cause[1] |
Frequency | Relatively common[3] |
Causes may include drugs, certain medications, schizophrenia, dementia, vision loss, and extreme tiredness.[1] The drugs involved may include alcohol, amphetamines, cocaine, LSD, or ecstasy.[1] Hallucinations may also occur around the time of sleep and during a fever.[1] Some people also have hallucinations as part of their religious experience.[4] Similar phenomena include dreaming, which does not involve wakefulness; pseudohallucination, which are accurately perceived as unreal; illusion, which involves misinterpreted real perception; and imagination, which is under voluntary control.[2] Delusions are beliefs that do not change despite conflicting evidence.[4]
Treatment depends on the underlying cause.[1] The most common form of hallucination is hearing voices, which affects 5 to 28% of people.[1][3] This is not uncommon after someone has lost a loved one.[1] Hallucinations have been described since at least the time of ancient Greece.[5] The word "hallucination" was introduced into English from Latin in 1572.[5]