This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bleeding and Thrombotic Disorders, Subject name: Medicine
Picket fence fever is seen in - 
Select and explain. 
A. Petrositis, B. Lateral sinus thrombosis, C. Meningitis, D. Temporal lobe abscess
B: Lateral sinus thrombosis
Answer: B: Lateral sinus thrombosis 
Explanation: Ans. is 'b' i.e., Lateral sinus thrombosiso Picket Fence fever is commonly associated with lateral sinus thrombosis.o It is characterized by spikes in fever (several times during the day).Also know the following features of lateral sinus thrombosis Queckenstedt's tests: -No increase in C.S.F. pressure when ipsi lateral jugular vein compressed.Greisinger's signTenderness over mastoid area from extension through mastoid emissiary vein.