What is dyslexia? Dyslexia is a neuropsychological term that refers to the loss of the ability to read, but other language skills may still exist, such as the ability to speak and understand other people’s speech, but the inability to read text, when the patient’s previous reading ability was good. The most common cause of dyslexia is cerebrovascular disease, mainly due to damage to the left parietal lobe due to cerebral infarction or cerebral hemorrhage, resulting in the destruction of its reading center and therefore dyslexia. The treatment of dyslexia is divided into two aspects: medication and rehabilitation.