Most diseases, honestly, are incurable. I am of the opinion that common treatments are often worse than the cures, but it's up to each of us to decide where to draw the line ^^
I hope you're doing well.
If you do not believe and have faith then of course they are incurable. If you believe and have faith then you'll realize people have been cured of everything you just need to look and seek for the truth and not allow a school of thought to control you.
I have suffered a brain injury, was told that I can't fix it, yet because of my faith and belief have been able to come full throttle because of it. I have met HIV and Cancer patients who are told they are incurable but no longer have any symptoms using alternative treatments.