Cerebral palsy is typically diagnosed by an imaging study. The most common imaging study is a CT scan or an MRI. An EEG (electroencephalogram) can also be used, along with genetic testing and metabolic testing. Cerebral palsy typically causes decreased movement that is associated with exaggerated reflexes, limp arms/legs, an unusual posture, movements of the body that the child cannot control, uneven or unsteady walking, or a combination of these issues. When these common signs and symptoms are observed, the physician will typically order an imaging study to further diagnose the condition.