Addiction Drug Use Hallucinogens Types of Hallucinations By Elizabeth Hartney, BSc, MSc, MA, PhD Elizabeth Hartney, BSc, MSc, MA, PhD Elizabeth Hartney, BSc, MSc, MA, PhD is a psychologist, professor, and Director of the Centre for Health Leadership and Research at Royal Roads University, Canada. Learn about our editorial process Updated on May 29, 2022 Medically reviewed Verywell Mind articles are reviewed by board-certified physicians and mental healthcare professionals. Medical Reviewers confirm the content is thorough and accurate, reflecting the latest evidence-based research. Content is reviewed before publication and upon substantial updates. Learn more. by Steven Gans, MD Medically reviewed by Steven Gans, MD Steven Gans, MD is board-certified in psychiatry and is an active supervisor, teacher, and mentor at Massachusetts General Hospital. Learn about our Medical Review Board Print Thomas Barwick / Getty Images Table of Contents View All Table of Contents Types Auditory Visual Tactile Olfactory Gustatory Hypnagogic Causes Treatment Frequently Asked Questions What Are the Different Types of Hallucinations? A hallucination is something you see, hear, feel, smell, or taste that isn't really there. Hallucinations can happen through any of the five senses, but the most common types are visual and auditory (hearing) hallucinations. Auditory Hallucinations Auditory hallucinations can range from mild distortions to voices when nobody is speaking. The voices may be quiet or loud, friendly or intimidating. Auditory hallucinations are the most common type that people with schizophrenia experience. Distortions in and intensity of auditory experiences such as while listening to music are common among people taking hallucinogenic drugs. What Are Hallucinogenic Drugs? Visual Hallucinations Visual hallucinations can be mild distortions of what you see or visions of things that aren't there. They can be pleasant or unpleasant and can shift quickly from one to the other, causing rapid mood changes. Common visual hallucinations include: Unusually vivid colorsClear visual illusionsNew patterns within naturally occurring patterns, such as the veins on a leaf, or patterns superimposed onto objectsNonexistent objects or peopleFaces that look artificial or made of plastic, clay, or some other inanimate substanceHalos around objectsPeripheral vision anomaliesWalls that look like they're "breathing" Visual hallucinations are a hallmark effect of hallucinogenic drugs such as LSD. The extent to which people experience hallucinations while under their influence varies. Some people see them consistently on low doses of a drug, whereas other people experience only a stimulant effect, even on high doses. This can change rapidly within the same drug experience. People who have never hallucinated before may suddenly find themselves in an alien, seemingly make-believe world. Tactile Hallucinations Tactile hallucinations are physical sensations of something that is not there. Mild tactile hallucinations are common in people high on psychoactive drugs and are not always pleasurable or mild. All of these drugs are unpredictable and vary in effect from one person to another. Crystal meth is notorious for producing unpleasant tactile hallucinations. People who take meth often feel as if bugs are crawling over or under their skin. These tactile hallucinations can feel so real that people scratch or pick holes in their skin while trying to remove the nonexistent bugs. This can lead to sores, scabs, scars, and infections. Olfactory Hallucinations Olfactory hallucinations involve smelling something that is not there. They can be associated with brain damage and epileptic seizures. This kind of hallucination can be especially troubling, particularly if it overlaps with delusions. For a person who believes the house is on fire, for example, an olfactory hallucination of smoke would validate that belief. Gustatory Hallucinations Gustatory (taste) hallucinations are rare. Like olfactory hallucinations, they sometimes happen in conjunction with brain damage and seizures. Like olfactory hallucinations, they can pose particular distress when coupled with delusions. For example, a taste hallucination would be extremely upsetting for someone with a delusion that they are being poisoned. They might perceive it as proof that the delusion is true. Hypnagogic Hallucinations Hypnagogic hallucinations happen in the stage between wakefulness and sleep. They're very common, regardless of mental health status. They're usually visual, unlike hallucinations associated with mental illnesses such as schizophrenia. In the absence of such conditions, people generally realize that they are hallucinations and not real. Some conditions predispose people to hypnagogic hallucinations, such as: NarcolepsyClinical depressionBipolar disorderPostpartum psychosisPost-traumatic stress disorder (PTSD)Borderline personality disorder In addition, some drugs such as amitriptyline that are used to treat mental conditions can increase hypnagogic hallucinations. What Causes Hallucinations? Hallucinations can happen under the influence of drugs, especially hallucinogenic or psychedelic substances such as LSD and magic mushrooms. Hallucinations can be a symptom of psychosis as well, such as in schizophrenia and bipolar disorder. In addition, hallucinations can happen to almost anyone subjected to extreme physical or mental stress. Other possible causes include extreme sleep deprivation, migraines, epilepsy, and social isolation. Treatment Treatment for hallucinations relies entirely on the condition causing them. Typically, a clinician will recommend a combination of medication and therapy, along with some strategies a person can use to deal with hallucinations. Therapy Therapists usually encourage people to explore how they feel about the hallucinations and what they sense before, during, and after them. A clinician might recommend reading materials and websites to educate the person about the condition, possible causes, and treatments. Medication and Other Treatments Some medications can help eliminate or reduce the frequency of hallucinations. Others are prescribed to help calm the person so they can cope. Research on drugs and treatments for hallucinations is ongoing. For example, the relatively new drug Nuplazid (pimavanserin) is the first approved for hallucinations associated with Parkinson’s disease. Some research indicates that transcranial magnetic stimulation (TMS) might help reduce the frequency and severity of auditory hallucinations in some people with schizophrenia. Coping Strategies A person experiencing auditory hallucinations might benefit from: ExercisingHumming or singing a familiar song (such as "Happy Birthday") repetitivelyIgnoring the voicesListening to musicReadingConversing with trusted friends or family A Word From Verywell Hallucinations cause fear and anxiety among those who have them as well as their loved ones. There is no single, definitive cause of all hallucinations, so treatment depends on the underlying conditions associated with the hallucinations. If you're experiencing hallucinations, a physician or mental health professional can help you get to the bottom of these distressing occurrences and find a treatment that works for you. Frequently Asked Questions What does a visual hallucination look like? Simple visual hallucinations are commonly light, lines, and patterns. More complex hallucinations involve vivid, realistic images of people, animals, and scenery—sometimes smaller or larger than they'd be in real life. What drugs can cause hallucinations? Drugs such as amphetamines, cocaine, LSD, Ecstasy, psilocybin ("magic mushrooms"), mescaline, DMT, and many other substances can cause hallucinations. Some prescribed drugs do, too, particularly when misused. These include oxycodone, Percocet, Vicodin, fentanyl, and morphine, among others. What is the difference between hallucinations and delusions? A hallucination is a sensory experience, such as seeing an animal that isn't there. A delusion involves an erroneous belief—for example, a person might believe they're being poisoned. 9 Sources Verywell Mind uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. Chaudhury S. Hallucinations: Clinical aspects and management. Ind Psychiatry J. 2010;19(1):5-12. doi:10.4103/0972-6748.77625 Rusyniak DE. 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Sosland M, Pinninti N. 5 ways to quiet auditory hallucinations. Current Psychiatry. 2005; 4(4):110-110. Block MN. An overview of visual hallucinations: Patients who experience hallucinations secondary to a host of underlying conditions often will look to you for guidance, reassurance and treatment. Rev Optom. 2012;149(3):82-91. By Elizabeth Hartney, BSc, MSc, MA, PhD Elizabeth Hartney, BSc, MSc, MA, PhD is a psychologist, professor, and Director of the Centre for Health Leadership and Research at Royal Roads University, Canada. See Our Editorial Process Meet Our Review Board Share Feedback Was this page helpful? Thanks for your feedback! What is your feedback? Other Helpful Report an Error Submit Get Treatment for Addiction Advertiser Disclosure × The offers that appear in this table are from partnerships from which Verywell Mind receives compensation.