Alice syndrome, the full name is Alice in Wonderland syndrome. The disease was first named in 1955 by a doctor named Todd, who published an article in Canada. The main symptom is a highly disorienting neurological phenomenon in which the patient’s visual perception is severely affected. When the patient looks at something for a long time, the thing itself becomes distorted, suddenly larger or smaller, and some patients describe a mosaic-like sensation in front of their eyes or a sense of distortion of space-time. It is not a disease or a diagnosis, but rather a group of clinical syndromes that can be caused by many diseases, such as epilepsy, drug intoxication, migraine, schizophrenia, and viral encephalitis that causes infectious mononucleosis.