Introduction -- Why a book about iNPH -- Acknowledgement -- History -- Hakim´s discovery of NPH -- Fundamental discoveries in the last decades -- Epidemiology -- Pathophysiology -- Clinical symptoms and examination -- Major symptoms -- Minor symptoms -- Gait characteristics of NPH -- Differential diagnostics of gait impairment -- Psychological profile of NPH patients -- Differential diagnostics against other types of dementias -- Urinary disorder associated with NPH -- Differential diagnostics of urinary disorder -- Neurodegenerative comorbidities and iNPH mimics -- Invasive diagnostic test -- External lumbar drainage -- CSF tap test -- Lumbar infusion test -- Other invasive tests -- Laboratory findings of NPH -- Imaging -- Basic CT and MRI indices -- DESH, callosal angle and cingulate sulcus sign -- Novel MRI indices and imaging models -- Volumetr -- DT -- Phase-contrast MRI -- Novel MRI techniques (elastography, glymphatic pathway imaging) and their implications -- Imaging differential diagnosis -- Potential of machine learning in NPH diagnostics -- Shuntology - treatment of NPH -- Ventriculoperitoneal shunt -- Surgical technique -- Valve types -- Valve setting -- Other types of shunt -- Ventriculoatrial shunt -- Lumboperitoneal shunt -- Role of endoscopy in NPH treatment -- Future directions of valve technology -- Complications -- Surgical complications -- Infection -- Underdrainage and Overdrainage -- Follow-up -- Clinical follow-up -- Imaging follow-up -- Invasive tests in follow-up -- Prognosis and outcomes -- When to revise the shunt? -- Future perspectives -- Summary. .