**Idiopathic Normal Pressure Hydrocephalus: An Overview of Pathophysiology, Clinical Features, Diagnosis and Treatment**

Rubesh Gooriah and Ashok Raman

Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/64198

#### **Abstract**

Normal pressure hydrocephalus is characterised by the triad of gait disturbance, dementia and urinary incontinence. Although our understanding of the condition has considerably improved since it was initially described over 50 years ago, its patho‐ physiology is still a matter of debate. We provide an overview of the current concepts in pathophysiology and discuss the clinical features, diagnosis and treatment of this cause of dementia.

**Keywords:** cerebrospinal fluid, cerebral blood flow, vascular compliance, CSF outflow resistance, neurodegeneration
