It looks really thin at the top of the supposed whorl. I think it is at least starting to be an incipient bald spot. The hair in the area is matted. Maybe it's both plus many of us if we ask enough will finally land on the male pattern baldness yes, space.@Yog It is just a double hair whorl. Same as when you posted years ago. Google “ double hair whorl” and “double hair crown” and you’ll see many examples. You can actually see the whorl pattern in each or your hair whorls
When you combine dark hair with light skin, hair whorls can be very prominent.
I just looked at the pics from when 22.. it’s a lot more thinned out now .@Yog I personally see a normal double crown. You hair was like that at 22 and is the same at 29. In my experience hair loss that starts a 22 would have been aggressive and you’d have a lot less hair by now.
The hair looks perfectly healthy and scalp is only visible where the hair changes direction. Plus a light scalp will contrast hard against dark hair and the camera exposure on a phone will pick this up more.
However, you know your hair better than anyone and if you believe it has changed see a dermatologist.