26yo male concern over crown

[Glantern]

Hi I am a 26 year old male from England, I have an issue with my Crown and I want to know if I am making something out of nothing or if there is something to worry about.

Is it thinning or is it normal, if there is something going on should I speak to a dermatologist or something.

I will link pictures below.

Thank you in advance for responding

https://imgur.com/a/dRNND