What movement disorder is characterized by slow, writhing movements, especially in individuals with cerebral palsy?

Athetosis is characterized by slow, writhing movements that are particularly evident in individuals with conditions such as cerebral palsy. This movement disorder showcases involuntary, continuous movements that can affect the limbs, face, and trunk, making it challenging for individuals to maintain control over their postures and movements. The movements are often described as flowing or serpentine in nature, which can significantly impair function and quality of life.

In patients with cerebral palsy, athetosis can arise as a result of damage to areas of the brain responsible for coordinating muscle movements. Unlike spasticity, which involves stiffness and resistance to movement, athetosis is marked by irregular and uncontrolled motions. This differentiates it clearly from other movement disorders, such as chorea, which presents with more abrupt and unpredictable movements, and tremor, which is characterized by rhythmic oscillatory movements.