Not Sexually Active. Having Dry, Flaky Skin In The Crease Between The Upper Thigh And Vagina. What Could This Be?

I am not sexually active (ignoring normal masturbation), I do not shave, wax, or use chemicals beside oatmeal and sheabutter bar soup on that vagina or anywhere serounding that region I do have a history of mild psoriasis on my arms and legs, but that s it. Keeping all that in mind, the crease between my upper thigh and where the vagina mound is very dry and has white flaky skin. I am not sure if I am just not cleaning properly or if I should consult my on/gyn? What could it be, and should I take it seriously?