What causes high muscle tone in babies?

High muscle tone in infants refers to increased muscle tension, manifested as muscle stiffness and restricted movement. Causes of high muscle tone in infants may include the following: 1. Underdeveloped or immature nervous system may lead to abnormal muscle tone. The nervous system in newborns has not fully matured and may exhibit high muscle tension. This condition generally improves gradually as the nervous system develops. 2. Central nervous system disorders, such as cerebral palsy, may also cause high muscle tone. These disorders are usually accompanied by other neurological symptoms and require timely medical attention. 3. Certain genetic disorders and metabolic disturbances may also result in abnormal muscle tone. These conditions may impair normal muscle function, leading to increased muscle tone. If an infant displays symptoms of high muscle tone, prompt medical evaluation is necessary.