The conclusion is that there's a link between high testosterone levels, insulin resistance, and certain skin conditions, regardless of obesity.
43 citations,
May 1988 in “British Journal of Dermatology” Patients with acanthosis nigricans often have insulin resistance and signs of increased male hormones, but treatment targeting these male hormones is generally ineffective.
2 citations,
October 2019 in “International Journal of Research in Dermatology” Obese people have more and worse skin problems than those of normal weight.
3 citations,
January 2010 in “Elsevier eBooks” The document describes various skin conditions, their features, and treatments but lacks detailed study size information.
15 citations,
January 1988 in “Drugs” The document concludes that treatments for female hair loss and excessive hair growth are temporary and not well-studied.