An Observational Study on Idiopathic Intracranial Hypertension (IIH) in a Tertiary Care Hospital in Bangladesh

Background: Among the risk factors of cardiovascular diseases, hypertension is one of the major reason. Intracranial hypertension (IIH) is a pressure buildup around the brain. It can happen unexpectedly, as a result of a severe head injury, stroke, or brain abscess could be occurred. It could also be a chronic, long-term condition, known as IIH. It results in the signs and symptoms of a brain tumor. Which is also known as benign intracranial hypertension. Cerebrospinal fluid, or CSF, is the fluid that surrounds the spinal cord and brain. CSF can accumulate if too much fluid is produced or not enough is reabsorbed. This can induce symptoms similar to a brain tumor. Intracranial Hypertension can be classified into three categories, they are Acute, Chronic and Idiopathic. IIH is recognized when the increased intracranial pressure cannot be explained by any other underlying cause.Aim: The aim of the study was to observe idiopathic intracranial hypertension patients in a select tertiary care hospital of Bangladesh.Methods:This cross-sectional observational study was conducted at the Department of Neurosurgery, Sylhet M. A. G. Osmani Medical College Hospital, Sylhet, Bangladesh. The study duration was from January 2012 to December 2020. A total number of 47 participants had been recruited as study population.Results:Male: female ratio was 1:10.75, and 91% of the total participants were female. 40.43% of the participants were aged between 21-30 years. 46.81% were overweight and 34.04% were obese. Most common symptom was nausea, followed by visual impairment and double vision.Conclusion:The prevalence of Idiopathic Intracranial Hypertension is much higher among the female. Female and high BMI are significant risk factors of IIH. It is more prevalent among young adults, and results on various vision related symptoms.

Benign Intracranial Hypertension Due to Hypoparathyroidism: A Case Report

Objective: The objective of this study is to present the rare case of a young girl with idiopathic intracranial hypertension secondary to hypoparathyroidism.Background: Idiopathic intracranial hypertension is a neurological syndrome characterized by elevated intracranial pressure (> 25 cmH2O) in the absence of intracerebral abnormalities or hydrocephalus. The pathophysiology of idiopathic intracranial hypertension is unknown, and rare cases of idiopathic intracranial hypertension secondary to hypoparathyroidism have been described. It is supposed that hypocalcemia causes decrease in the absorption of cerebrospinal fluid in arachnoidal granulations.Methods: The workup of the girl with idiopathic intracranial hypertension and hypoparathyroidism included physical examination, blood tests, diagnostic imaging, and lumbar puncture.Results: We present a 9-year-old female patient who was hospitalized for headache associated with nausea and vomiting for 3 weeks. She underwent an ophthalmologic examination that revealed papilledema. Lumbar puncture revealed an opening pressure of 65 cm H2O; cerebrospinal fluid analysis and brain computed tomography scan were normal. The patient started taking acetazolamide. Blood tests revealed hypocalcemia associated with high phosphorus level and undetectable PTH hormone, which led us to suspect hypoparathyroidism. She had never had cramps, paraesthesias, or tetany. Chvostek's and Trousseau's signs were positive. In the neck ultrasonography, parathyroids were not visible. Oral supplementation with calcitriol and calcium was started. Headache, nausea, and vomiting immediately disappeared after the lumbar puncture, and the papilledema improved gradually.Conclusions: Several anecdotal cases of idiopathic intracranial hypertension secondary to hypoparathyroidism have been described. However, our case report is of particular interest, since the child did not present with typical neurological hypoparathyroidism symptoms. Therefore, we recommend that hypoparathyroidism should be included in diagnostic investigations on children with clinical findings of idiopathic intracranial hypertension, because clinical manifestations of hypoparathyroidism are variable and may involve almost all organ systems.

Infantile idiopathic intracranial hypertension: case report and review of the literature

Background Idiopathic intracranial hypertension is an infrequent condition of childhood, and is extremely rare in infants, with only 26 cases described. The etiology is still unknown. Typical clinical manifestations change with age, and symptoms are atypical in infants, thus the diagnosis could be late. This is based on increased opening pressure at lumbar puncture, papilloedema and normal cerebral MRI. The measurement of cerebrospinal fluid opening pressure in infants is an issue because many factors may affect it, and data about normal values are scanty. The mainstay of treatment is acetazolamide, which allows to relieve symptoms and to avoid permanent visual loss if promptly administered. Case presentation We report the case of an 8-month-old infant admitted because of vomit, loss of appetite and irritability; later, also bulging anterior fontanel was observed. Cerebral MRI and cerebrospinal fluid analysis resulted negative and after two lumbar punctures he experienced initial symptom relief. Once the diagnosis of idiopathic intracranial hypertension was made, he received oral acetazolamide, and corticosteroids, with progressive symptom resolution. Conclusions Infantile idiopathic intracranial hypertension is extremely rare, and not well described yet. Bulging anterior fontanel in otherwise healthy infants with normal neuroimaging should be always considered suggestive, but can be a late sign, while irritability and anorexia, especially if associated with vomiting, may represent an early sign. In such cases, lumbar puncture should be always done, hopefully with cerebrospinal fluid opening pressure measurement, which is among coded diagnostic criteria, but whose threshold is controversial in infants. Early diagnosis, timely treatment and strict follow-up help to prevent vision loss or death of affected infants.