A child with cerebral palsy may also experience muscle stiffness. In some cases, muscle reflexes may continue to function as normal, despite the stiffness. This is known as rigidity.
In other cases, however, muscle stiffness is accompanied by exaggerated reflexes—a condition known as spasticity. According to CerebralPalsy.org, these abnormal reflexes can include asymmetrical or symmetrical tonic reflex, palmer grasp reflex, and spinal gallant reflexes.