Is This A Thinning Crown Or Just A Parting?

[TheCrown92]

Trying to work out whether to get on finasteride. I know thinning is not extensive yet but have had different opinions from 2 trichologists - one who said it was start of male pattern baldness and one who said normal. Obviously, keen to start treatment quickly if it is male pattern baldness but wondering if safe to wait and see for a bit?

 

[Notanuther1]

Looks like maybe just parting. Hard to tell. Does it feel thinner?