Idiopathic Intracranial Hypertension Developing After Levothyroxine Replacement in a Patient with Acquired Primary Hypothyroidism- A Case Report

Idiopathic intracranial hypertension (IIH) is the persistent increase in intracranial pressure in the absence of any intracranial lesions. Though termed idiopathic IIH is known to be associated with a wide variety of disease conditions and drugs i.e. SLE, adrenal insufficiency, Cushing disease, hypoparathyroidism, hypothyroidism, iron deficiency, vitamin A, tetracycline, nalidixic acid, steroid withdrawal and many others. IIH is a rare disease, but IIH developing after replacement of levothyroxine is even rarer. Only a handful of cases of IIH associated with levothyroxine therapy have been mentioned in the literature. We are reporting a case of IIH developing after starting levothyroxine replacement and then the literature is reviewed.