At first I thought my daughter had cradle cap, but she's 6 now, and she still has this. It's not flaky, and they are attached to the scalp unless they are picked off (🤢). I had scalp psoriasis as a kid, it healed up, and I didn't think any more of it, but I have for decades had 'head flakes' stuck on my own head, which flare up hormonally and with stress, and I've suddenly realised maybe that's the scalp psoriasis after all, and wondering if she has the same.
It could have immune system implications for her I might need to get it checked out properly at some stage.