Hello Vincent,
Very nice to meet you.
I've been working in construction since I was still a teenager. I assume it has got gradually worse when I got older due to the noisy environment I work in. It is only since 6 years ago that I started to really notice a high pitched noise in both my ears. Some of my friends at work told me it's normal and just a part of getting older. My doctor told me recently that it is not normal and recommended me to look for help.