Clinical value of constructional skill testing in patients with secondary normal pressure hydrocephalus

Cognitive functions are frequently impaired in patients with normal pressure hydrocephalus (NPH). Two patients with NPH initially had dysfunctional constructional skill but exhibited improvements after shunt surgery. Dysfunction of constructional skill should be added to the important clinical features of NPH. The geometric test can be used as a practical tool for evaluation of parietal lobe function in patients with NPH.