Bumpy scalp

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I've been taking vitamines and washing my hair will nizoral for the past month or so because my hair line was starting to thin out and receed. When I feel my head now, the base of each hair is really hard, not so much brittle, just stronger than the rest of the follicle. I also can see bumbs where the follicle comes out, sorta like goosebumps all over my head. The hair is also a lot darker at the base. My head doesn't itch at all.

I'm just wondering if this is a good sign? Or perhaps its inflamation?

Any thoughts?

Thanks!