Tolosa-Hunt Syndrome (THS) is a rare disorder characterized by severe unilateral periorbital headache, painful eye movements, and double vision. This syndrome affects males and females equally in their forties to fifties. THS is caused by granulomatous inflammation of the cavernous sinus, usually involving CN III, IV, and VI. We herein report a case of Tolosa-Hunt Syndrome in an 18-year-old female who was initially misdiagnosed as idiopathic intracranial hypertension. Initial treatment was ineffective and the delay may have allowed spread of the disease to involve CN V and VII. This case highlights the pitfalls which can lead to a delay in diagnosis and treatment.