AbstractIn literature, patients with coexistence of normal pressure hydrocephalus (NPH) and Parkinsons’s disease (PD) have been rarely reported. Herein, I illustrate the evaluation processes of a remarkable patient with PD and comorbid NPH from my experience, which I think may provide crucial perspectives regarding the management problems of these patients. Besides, the patient had also developed bipolar disorder in the follow-up course and extrapyramidal side effects related to antipsychotic medications, which further complicated the treatment process. I think that results of future reports of larger case series including the long-term follow-up of this group of patients with coexisting NPH and PD would provide substantial perspectives regarding the contributory effects of these two pathophysiologies, as well as management, of NPH in these specific patients with neurodegenerative pathology.