Introduction – Hallucinations are false perceptions of sensory experiences, which appear real but are created in your mind and may also affect all five senses such as sound, sights, taste, touch, and smell. Hallucinations are a sign of a psychosis-based disorder mainly schizophrenia and also some neurological conditions with many temporary conditions. Several other causes of hallucinations are side effects of medications, physical illnesses such as alcohol use disorder or epilepsy, and many mental illnesses like schizophrenia, and many more.

Several causes of Hallucinations – Several conditions or diseases that may cause hallucinations are discussed below –

• Parkison’s disease – This type of condition may cause a part of your brain to deteriorate and also cause more serious symptoms over time. Around 20 to 40 percent of individuals with Parkinson’s disease may experience hallucinations.
• Epilepsy – This type of mental condition involves a part of your brain known as the temporal lobe and may cause most commonly olfactory hallucinations.
• Migraines – If any individuals are suffering from migraines, a kind of headache then it may also cause a type of visual hallucinations.
• Alzheimer’s disease – There is around 13 percent of individuals that are suffering from Alzheimer’s disease which may cause hallucinations. Several changes inside your brain result and may cause hallucinations.
• Schizophrenia – There are more than 70 percent of individuals with schizophrenia that may cause visual hallucinations.
• Brain tumor – If any tumor spreads in some part of your brain then it may cause hallucinations of mainly taste and smell.
• Sleep disorder – Lack of sleep may cause hallucinations in some individuals. If you have not slept or not gotten enough sleep for a long period then you may be more prone to hallucinations.
• Medications – Some medications taken for physical and mental health may also cause hallucinations. Epilepsy, depression, psychosis, and Parkinson’s disease medications may sometimes enhance or trigger symptoms of hallucinations.

Other conditions that may cause hallucinations – Several other conditions that may cause hallucinations are

• Social isolation
• Seizures
• Migraine
• High fever
• Depression
• Sleep disorder
• Sensory problems including deafness and blindness
• Dementia
• Head injury