All of the following statements are true regarding cavernous sinus thrombosis EXCEPT
Cavernous sinus thrombosis caused by sepsis in the dangerous area of face, in nasal cavities & in paranasal sinuses. Septic emboli carried by superior (more common) or inferior ophthalmic veins into the cavernous sinus. Nervous symptoms - Loss of sensation around the eye due to involvement of V1 and V2 division of Vth nerve. - Involvement of CN III, IV, VI Venous symptoms Edema of eyelids, cornea, root of nose d/o congestion of the orbital veins.
Loss of jaw jerk
Inferior ophthalmic vein can spread infection from dangerous area of face
Ethmoidal sinusitis is the most common cause
Loss of sensation around the eye
Brainstem lesions and blood supply of CNS