<qa>  What is a Ferriman-Gallwey score?1. Clinical or biochemical hyperandrogenism: Biochemical hyperandrogenaemia is defined as a total serum testosterone concentration above normal threshold, andor clinical hyperandrogenism is defined as a Ferriman-Gallwey FG score of 5 or acne defined by the Global Acne Grading System GAGS as mild moderate severe very severe. 