![]() Macropsia is a condition where the individual sees everything larger than it is. ![]() Micropsia is an abnormal visual condition, usually occurring in the context of visual hallucination, in which the affected person sees objects as being smaller than they are in reality. Within the category of Lilliputian hallucinations, people may experience either micropsia or macropsia. People with certain neurological diseases may also experience similar visual hallucinations. These changes in perception are collectively known as metamorphopsias, or Lilliputian hallucinations, which refer to objects appearing either smaller or larger than reality. Individuals with AIWS can experience illusions of expansion, reduction, or distortion of their body image, such as microsomatognosia (feeling that their own body or body parts are shrinking), or macrosomatognosia (feeling that their body or body parts are growing taller or larger). Episodes typically last from a few minutes to an hour, and each episode may vary in experience. AIWS episodes vary in length from person to person. AIWS is characterized by the individual being able to recognize the distortion in the perception of their own body and is episodic. Alice in Wonderland syndrome is often associated with distortion of sensory perception, which involves visual, somatosensory, and non-visual symptoms. ![]() Less frequent symptoms also include: loss of limb control and coordination, memory loss, lingering touch and sound sensations, and emotional instability. Migraines, nausea, dizziness, and agitation are also commonly associated symptoms with Alice in Wonderland syndrome. With over 60 associated symptoms, AIWS affects the sense of vision, sensation, touch, and hearing, as well as the perception of one's body image. In contrast, they utilize the term "Alice in Wonderland-like syndrome" to encompass symptoms associated with changes in perception of vision, time, hearing, touch, or other external perceptions. The classification is not universally agreed upon in literature, however, some authors distinguish true Alice in Wonderland syndrome based solely on symptoms related to alterations in a person's body image. Īlthough there are cases of Alice in Wonderland syndrome in both adolescents and adults, it is most commonly seen in children. It is also theorized that AIWS can be caused by abnormal amounts of electrical activity, resulting in abnormal blood flow in the parts of the brain that process visual perception and texture. The cause of Alice in Wonderland syndrome is currently unknown, but it has often been associated with migraines, head trauma, or viral encephalitis caused by Epstein–Barr virus infection. Distortion may also occur for senses other than vision. People with this syndrome may experience distortions in their visual perception of objects, such as appearing smaller ( micropsia) or larger ( macropsia), or appearing to be closer ( pelopsia) or farther ( teleopsia) than they are. Īlice in Wonderland syndrome ( AIWS), also known as Todd's syndrome or dysmetropsia, is a neurological disorder that distorts perception. ![]() Tachysensia - Altered perception of time Įach symptom is separate and will only occur for a 20-to-50-minute period.Metamorphopsia - Altered perception of shape.Teleopsia - Objects are perceived much further away than they are.Pelopsia - Objects are perceived nearer than they actually are.Micropsia - Objects are perceived smaller than their actual size.Macropsia - Objects are perceived larger than their actual size.From Lewis Carroll's 1865 novel Alice's Adventures in Wonderland The perception a person can have due to micropsia, a potential symptom of dysmetropsia. Todd's syndrome, Lilliputian hallucinations, dysmetropsia Medical condition Alice in Wonderland syndrome
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