Abnormalities in infantile dystonia can be seen in postural abnormalities, spasticity, and ankylosis.
1. When the baby’s muscle tone is too high, there will be more abnormal postures, such as thumb inward, head and back flexion, corrugator (high degree of straightness of the neck and back, the body tilted like a bow), and hard straightening or crossing of the legs.
2. Spasmodic state: When the infant’s limbs are passively stretched and flexed, it is characterized by a relatively high initial resistance and a sudden decrease in terminal resistance. The tension in the baby’s muscles increases.
3. Tonic state: extravertebral system injuries can lead to tonus, which is mainly characterized by the same sense of resistance in the same muscle at the beginning and the end of the movement when passive joint activities are carried out in any direction, i.e., the tension of the active and antagonist muscles increases at the same time. If the above symptoms occur in infants and young children, the possibility of cerebral palsy should be considered, and rehabilitation exercises should be given after timely consultation with the hospital.