6.6.1 Headache attributed to cerebral venous thrombosis (CVT)

History: A 32-year-old woman, previously healthy, reports a progressive headache for 5 days, with an insidious onset and diffuse nature, described as "constant pressure" (intensity 8/10), unresponsive to common analgesics. Associated symptoms include nausea, vomiting, and photophobia. She denies recent trauma or infections. History of combined oral contraceptive use for 5 years.

Physical/Neurological Examination: The patient is alert but with mild drowsiness. Bilateral papilledema on fundoscopic examination. No motor or sensory deficits. Negative Babinski sign.

Complementary Examinations:

Cranial MRI + Venography: Thrombosis of the superior sagittal sinus with bilateral parietal vasogenic edema.

Laboratory: Normal complete blood count and coagulation profile; elevated C-reactive protein.