In addition to motor and postural abnormalities, children with cerebral palsy may also have one or more of the following symptoms (1) Mental retardation: Cerebral palsy is not the same as mental retardation. In fact, 25% of children with cerebral palsy have normal intelligence, and some of them are highly intelligent. About 50% will have mild or moderate mental retardation, and 25% will have severe mental retardation. (2) Language disorders: About 70%-75% of patients may have varying degrees of language disorders, of which 50%-75% can be improved with speech therapy. Language disorders are often preceded by difficulties in sucking, swallowing and chewing, and manifest in the form of slurred articulation. Difficulty in constructing speech, language expression disorders and aphasia. In general, there is a direct relationship between the severity of the language disorder and the degree of loss of motor skills. Delayed language development is proportional to the level of intelligence. Pronunciation difficulties are most often seen in tetraplegia, followed by diplegia and monoplegia. (3) Mouth and face dysfunction: Due to abnormal muscle tone and uncoordinated contraction of the facial muscles and oral and tongue muscles, as well as the persistence of certain primitive reflexes, resulting in chewing, swallowing and oral closure difficulties, salivation, etc. (4) Epilepsy: About 1/3 of children will have seizures, with spastic quadriplegia and monoplegia being more common. The incidence is higher in children with severe mental retardation. The tardive dyskinesia type with seizures is relatively rare. (Severe visual defects include congenital cataracts, optic nerve atrophy, and total blindness. It is often associated with severe mental retardation. About 1/4 of children with unilateral palsy may have ipsilateral hemianopia. Tactile disorders are more common in children with spasticity and less common in children with tardive dyskinesia. Hearing impairment is more common in children with tardive dyskinesia. Severe hearing loss or hypoacusis is more common in children with cerebral palsy due to nuclear jaundice. (6) Growth retardation. (7) Dental dysplasia: for example, yellowing, loose and fractured teeth, irregular teeth, and abnormal occlusion. (8) Loss of recognition and use: common loss of recognition includes tactile discrimination (inability to distinguish the type or form of objects by hand touch alone), visual discrimination (difficulty in distinguishing the appearance and location of various objects, pictures, and symbols), and auditory discrimination (difficulty in distinguishing the rhythm of sounds and language). Common disorders such as not being able to comb the hair with a comb, not being able to brush the teeth with a toothbrush, etc., in addition to confusing procedures when performing certain actions. (9) Emotional and behavioral disorders: Emotional abnormalities manifest as mood swings, irritability, stubbornness, capriciousness, etc., more prominent in children with tardive dyskinesia. Behavioral disorders are characterized by inattention, isolation, persistence of a certain action, and in some cases, self-injurious behavior.