Vitamin D deficiency rickets presenting as pseudotumor cerebri.

Pseudotumor cerebri is a condition of elevated intracranial pressure in the absence of clinical, laboratory or radiological evidence of an intracranial space-occupying lesion. Various associations with pseudotumor cerebri have been made in literature. We report the case of a five-month-old female infant with vitamin D deficiency rickets, who presented with pseudotumor cerebri. Her cerebrospinal fluid examination was normal, with a high opening pressure of 330 mmH2O. Her computed tomography scan was normal. After lumbar puncture the anterior fontanelle came at level. Her investigations revealed vitamin D deficiency. She was started on acetazolamide, calcitriol sachets, and calcium supplements. She became asymptomatic in three days and was discharged. Through this case we wish to highlight this unusual presentation of vitamin D deficiency rickets appearing as pseudotumor cerebri.