“…[1][2][3] The symptoms perceived are identical to those usually observed in the more commonly seen high-pressure hydrocephalus, with headaches, nausea, cranial neuropathies, ataxia, and obtundation. [2][3][4] McCullough 1 reported a series of patients who would develop symptomatic ventriculomegaly only when in the upright position, despite low or normal pressures and patent shunts. Subsequently, several case series of shunted patients with LPH occurring either spontaneously or following cerebrospinal fluid (CSF) loss were published.…”