Depending on the affected region in the brain, a broad spectrum of symptoms can be observed. Typical are movement and posture disorders with a spastic increase in muscle tone, which can affect the entire body or parts of it. In addition to spasticity, ataxia, i.e. impaired coordination of movement sequences with balance disorders, and athetosis, i.e. the occurrence of screw-like, uncontrolled movements, may be present.
Cramped muscles result in joint and spinal misalignments as well as bone deformities. Typically, spinal curvatures, hip and leg deformities, and pointed feet occur. Depending on the severity of ICP, affected individuals may have only mild limitations in walking or may be dependent on orthotics or a wheelchair. Often, ICP is accompanied by speech and vision disorders, epilepsy, and reduced intelligence.