1, mental retardation The disease often has backward motor development, uncoordinated movements, abnormal primitive reflexes, vojta postural reflexes, corrective responses and balance responses, and is easily misdiagnosed in early infancy [url]http://脑瘫[/url], but its symptoms of mental retardation are more prominent, with basically normal muscle tone and no postural abnormalities. 2, motor development is delayed Some children’s motor development is slightly behind that of normal children of the same age, especially premature babies. However, they do not have abnormal muscle tone and postural reflexes, no abnormal movement patterns, and no other abnormal neurological reflexes. The symptoms of motor development lag can disappear within a short period of time as the child grows older and focuses on motor training. 3. Congenital myasthenia gravis The child is born with obvious hypotonia, muscle weakness, and low or absent deep tendon reflexes. It is often easily complicated by respiratory tract infection. This disease is sometimes misdiagnosed as hypotonic cerebral palsy, but the latter tendon reflexes can usually be elicited. 4.Progressive spinal muscular atrophy The disease starts in infancy, and symptoms appear mostly after 3-6 months, and a few patients have abnormalities after birth, showing symmetrical weakness of the upper and lower extremities, progressive aggravation of muscle weakness, obvious muscle atrophy, and hypotonic or absent tendon reflexes, often suffering from repeated breathing due to respiratory muscle insufficiency.