I noticed it got better when I repented of an unrepentant sin and turned to Jesus.
I'm also trying to improve sperm quality so I started taking CoQ10, D3, K2, and a B complex (by Thorne.)
I'm fairly certain what has fixed my seb derm is the B complex because I'd read that a deficiency can cause it, but I wanted to share the other things I started taking at the same time as the B vitamins, it very well could have been something else.
I also supplement 25mcg T3 a day, divided throughout the day.