Hi @Weirb
i completely understand your problem and I may come as a surprise to you that this could be caused by a different problem all together. Try to find the root cause of the dermatitis.
In my case I had to go to the doctor for stomach and colon problems, in the end it I was allergic to gluten and this was causing rashes all over my body. I’ve eliminated all gluten related meals and I have a huge improvement in quality of life and guess what no dermatitis so far.
Hope this helps, hearing aids are a huge part of my life and professional career. i can’t even think of the idea of not wearing them due to a dermatitis.