Hallucinations that develop from consuming caffeine are a sign that you're experiencing a caffeine overdose. Hallucinations are defined by New York Times Health as seeing things that are not really present while you are awake and conscious. While...
With normal hearing, sound waves start a series of vibrations that send signals to the brain, according to Macalester College. But, with auditory hallucinations, there are no incoming auditory stimuli to cause the sounds. Auditory hallucinations...
Schizophrenia is a mental disorder in which patients see the world differently from the rest of the population, unable "to tell the difference between real and unreal experiences, to think logically, to have normal emotional responses, and to...
Hallucinations are a psychotic symptom that cause people to see or hear things that are not there. Ergot, a plant disease caused by a fungus, causes poisoning in humans and animals. In some types of ergotism, symptoms include hallucinations....
Multivitamin overdose or vitamin A overdose can cause symptoms such as hallucinations and depression. Your body needs vitamin A to keep the eyes healthy and to protect the cells from free-radical damage. Free-radical damage to the cells can cause...
Parkinson's disease causes a significant decrease in dopamine in the brain, resulting in problems with motor function. The dopamine decrease occurs because there's an abnormal destruction of specific neurons that produce the neurotransmitter....
Parkinson's disease develops in people over the age of 50 as a result of the destruction of dopamine-producing cells in the brain. The significant decrease in dopamine interferes with the communication between the brain and muscles, resulting in...
Patients with Parkinson's disease have problems with movement as a result of a dopamine deficiency. They can also have hallucinations, in which they hear, see or feel things that aren't there. These hallucinations can result from the medications...
A number of symptoms of Alzheimer’s disease are labeled as "psychotic," hallucinations being one of them. Around 18 percent of people with Alzheimer’s disease experience hallucinations, and they are more often reported in people with a...
Hallucinations are waking sensory representations of information that does not exist. They usually involve seeing, hearing or felling things that are not present, although smells and tastes may also be hallucinated. According to a fact sheet...
A hallucination---sometimes called sensory hallucination---is the abnormal sensory perception, usually of auditory or visual nature, that happens when an individual is awake and conscious. There are no real triggers to these perceptions. In other...
Hallucinations are a common symptom in dementia. Some hallucinations are caused by the dementia-causing disease itself, sometimes by medications and sometimes by other conditions. Hallucinations can occur in almost anyone under the right...
B-12 is one of several important B-vitamins necessary for good mental health, among other important functions. Vitamin B-12 deficiency may result in psychiatric problems such as depression and, in severe cases, hallucinations. While B-12 is...
Undernutrition, malnutrition and starvation can lead to many physical symptoms and often go hand in hand with psychiatric disorders including anorexia nervosa and depression. Low-calorie diets, lack of access to food and disorders that prevent the...
Dementia, also referred to as senility, is not a disease in and of itself. It is a word used to describe a specific cluster of symptoms caused by diseases that affect brain functioning, according to Medline Plus. Symptoms include cognitive...
Evening primrose oil (EPO) is an herbal preparation obtained from the seeds of the plant species Oenothera biennis. It contains significant amounts of a substance called gamma-linolenic acid (GLA) that belongs to a class of nutrients called...
The brain chemical that antidepressant medications such as selective serotonin reuptake inhibitors (SSRIs) affect is the exact brain chemical that LSD, PCP and other psychedelic drugs mimic in order to create their hallucinogenic effects. SSRIs...
Salvia divinorum is a plant with hallucinogenic properties. Traditionally, salvia is chewed or smoked for its psychoactive effects, which include altered perception and hallucinations. Salvia extracts are also available and are generally much more...
Doctors prescribe fentanyl--a type of opioid pain medication--to patients with cancer, according to Drugs.com. Available forms of fentanyl include a patch attached to the skin, lozenge, tablet and soluble film. The American Cancer Society says...
Schizophrenia is a devastating brain disorder that affects 1 percent of the world's population. Symptoms usually first appear in the late teens or early 20s, the University of Maryland Medical Center (UMMC) states. Paranoid schizophrenia, a...
Excessive Daytime Sleepiness (EDS) is the chief identifiable symptom of narcolepsy, and typically the first to manifest. Almost 90 percent of all narcoleptics suffer from EDS. EDS can strike even if a person with narcolepsy got plenty of sleep the...
Patients with bipolar disorder have abnormal highs and lows in their mood. For example, a patient can have periods of mania, the high mood, followed by a normal mood. The patient can also have depression, the low mood. Nevertheless, some bipolar...
Hallucinogenic drugs are substances that cause temporary but profound changes in perception and self-identity. Although LSD is the most recognized hallucinogenic drug in the world, other substances, both natural and synthetic, can also instigate...
Zolpidem is the generic form of Ambien. Difficulty sleeping or insomnia is treated with this hypnotic drug. Typical side effects of Zolpidem include diarrhea, tiredness, headache, sore throat or nose, general weakness and dry mouth. Severe side...
Psychosis is a mental state that involves a loss of contact with reality. The main symptoms of psychosis are hallucinations and delusions. Psychosis is a temporary condition that may or may not occur as the result of a mental disorder. Taking...
If you or a loved one suspect that you may have Schizophrenia, the information below is a start along the pathway of self-education. You may conduct your own online search for more information or start with Schizophrenia.com. Schizophrenia is a...
Detoxification from alcohol can cause a range of withdrawal symptoms, all of which depend on how long the alcoholic has been addicted and how severe the addiction is. Detox symptoms can be as mild as nausea and tremors or life-threatening in the...
Bipolar disorder and schizophrenia are two different psychological disorders; however, the Mayo Clinic states that bipolar disorder patients can have similar symptoms if they have bipolar with psychosis. The psychosis in bipolar disorder is...
A disorder that affects memory, language and personality, dementia rarely occurs in people under the age of 60, according to MedlinePlus. As dementia progresses, patients can have signs of psychosis, in which they have a break with reality. Drs....
A hallucination is a sensory experience of something that does not exist outside the mind, caused by various physical and mental disorders or by reactions to certain toxic substances. Learn about the different causes, symptoms, and treatments of...
