I think I may have multiple causes of hair loss. My DHEA is a bit high. I feel pressure/pain on my scalp when I shower since I have long hair and when wet it is quite heavy. My scalp is actually painful during and after I shower - for days. If I don't use Rogaine, I suspect at least some of it will grow back. If I start then stop Rogaine, will I lose all of the hair on scalp treated with Rogaine or only the hair that I wouldn't have had without Rogaine?