Griesinger's sign is seen in -: (A) Lateral sinus thrombosis, (B) Meningitis, (C) Brain abscess, (D) Cerebellar abscess
Answer is A. Lateral Sinus Thrombophlepitis

It is inflammation of the walls of sigmoid sinus (lateral sinus) with the formation of thrombus - Complication of acute coalescent mastoiditis or masked mastoiditis
Aetiology - Chronic SOM with cholesteatoma