<prompt> All are features of otosclerosis EXCEPTScwartz signDip in audiogramEndolymphatic hydropsWillis paracusis  <response>: Ans. c Endolymphatic hydrops. Ref. Diseases of ENT, PL Dhingra, 3rd ed., 58, 129MENIERES DISEASE endolymphatic hydropsOtosclerosis MH 05- Classic triad of symptoms include:- Vertigo- Tinnitus- Sensory neural hearing loss- Tullio phenomenon: condition where loud sounds noise produces vertigo- Rinnie test positive: ABC decreases affected ear and lateralizes to normal.- Recruitment test positive- Tone decay test positive 20 decibel- DiapJacusis: music seems discordant.- There occurs transformation of the Otic capsule into spongy bone, which latter becomes sclerotic bone.- Depression in audiogram and caharts notch- Schwarts sign red hue may be seen through the tympanic membrane of promontory- Paracusis Willis patient hears better in noisy surroundings- Most commonly starts at fistula antefenestrum- Reduced compliance at ambient pressure i.e., type As tympanogram is diagnostic .- Stapedectomy is treatment of choice. 