Spontaneous Intracranial Hypotension Presenting with Chiari Malformation and Hydrocephalus Associated With Lumbar Pseudoarachnoiditis

Spontaneous intracranial hypotension (SIH) is a rare occurrence, especially in children. In the pediatric population, three cases of Chiari malformation in children and no cases of hydrocephalus due to SIH have been discussed in the literature. We present two patients under the age of five who presented with imaging concerning for the need for neurosurgical intervention later found to be due to SIH that resolved spontaneously.