I have hyperacusis though it's generally attributed to general sensory integration dysfunction. I also have hearing loss, but I was born with it and it's low-range hearing loss. But I can say for sure that my sensory problems regarding sound got much worse as I grew older and began suffering from bipolar and CPTSD; before they were mostly every other sense besides sound, especially tactile.
So I can't be sure if the hyperacusis part is caused by my bipolar and CPTSD, but it's certainly not helped by it.