17M with Diffuse Thinning, Dandruff, and Body Hair Shedding

Has anyone experienced diffuse thinning + dandruff/inflammation + body hair shedding together?

17M here. Over the last 1–2 months I noticed:

\- increased scalp hair shedding

\- visible diffuse thinning/less density

\- dandruff/seb derm type white flakes on scalp, eyebrows and beard

\- scalp tenderness earlier (improved now with ketoconazole shampoo)

\- some pubic/body hair shedding too

\- mouth ulcers(a lot visible at back of my tongue), some swollen muscle like structure in my nose as well

\-Poor sleep

Hairline doesn’t seem to be rapidly receding but density loss/shedding is worrying me.

I think it might be some autoimmune condition as when I move my fingers through hair in a certain way, it kinda hurts sometimes, same goes with my beard as well.

Did anyone here have something similar that turned out to be:

\- telogen effluvium?

\- seb derm?

\- deficiency/thyroid related?

\- or androgenetic alopecia?

Planning blood tests soon. Just wanted to know if others experienced this combination.