You dont need to go to ENT. Chances are his/her knowledge of T will be elementry.
Damage to the synapse that connects haircells to the sensory neurons causes T....these are most vulnerable parts of the auditory system...they need be damaged upto 90% to cause hearing loss. But for T and H that much damage is not needed, partial damage is sufficient. This explains our normal audiograms. But the richness of the sounds we hear decreases with loss of synapses and we dont hear properly in noisy environment. This is called hidden hesring loss.
Loss of synapse means less input to the auditiory nerve....once this happens the neural changes that occur in brain like SFR(spontaneous firing rates) increase and increased central gain causes T and H respectively.
There is window of oppurtunity betweem few months to even years where synapses can recover as the haircells and sensory neurons remain intact during this window. This explains why certain people ( ex.
@attheedgeofscience ) benefitted from stem cell treatment while others did not. Maybe he was lucky enough to get the stemcells before haircells stopped firing.
There is also a guy whose T went away after months , but he was young(in his teens).. check the below link.
https://www.tinnitustalk.com/threads/my-personal-story-about-tinnitus-gone.5979/
Source:
http://www.nature.com/articles/srep24907