Clinical features
The characteristic features of cavernous sinus thrombosis are:
- fevers and rigors
- pain in the eye and forehead - ophthalmic division of V
- exophthalmos and occasionally, papilloedema
- cranial nerve palsies - III, IV, VI
- oedema of the periorbital structures and forehead due to blockage of venous drainage
- symptoms are most usually unilateral, but can extend via the circular sinus to become bilateral
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