This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Otosclerosis, Subject name: ENT
Meniere's disease is: 
Select and explain. 
A. Perilymphatic hydrops, B. Endolymphatic hydrops, C. Otospongiosis, D. Coalescent mastoiditis
B: Endolymphatic hydrops
Answer: B: Endolymphatic hydrops 
Explanation: (b) Endolymphatic hydrops(Ref. Cummings, 6th ed., 2331)Meniere's is also known as endolymphatic hydrops.There is no condition called Perilymphatic hydrops.Otospongiosis also known as otosclerosis is fixation of foot plate of stapes.Coalescent mastoiditis is infection of the mastoid air cells and is a complication following ASOM/ unsafe CSOM.