The most common symptom of a cavernous sinus thrombosis is a headache, which usually develops as a sharp pain behind or around the eyes and steadily gets worse. Occasionally, a person might get a “thunderclap headache,” which is a sudden severe headache.
Other sinus thrombosis symptoms include:
- Loss of vision, double vision or blurred vision
- Pain in the sinus area
- Pain or pressure in the ear
- Swollen or bulging eyes