RT Book, Section A1 Fitzgerald, Paul A. A2 Papadakis, Maxine A. A2 McPhee, Stephen J. A2 Rabow, Michael W. SR Print(0) ID 1175786944 T1 Male Hypogonadism T2 Current Medical Diagnosis & Treatment 2021 YR 2021 FD 2021 PB McGraw-Hill Education PP New York, NY SN 9781260469868 LK accessmedicine.mhmedical.com/content.aspx?aid=1175786944 RD 2023/02/04 AB ESSENTIALS OF DIAGNOSISDiminished libido and erections.Fatigue, depression, reduced exercise endurance.Decreased growth of body hair.Testes small or normal in size.Low serum total testosterone or free testosterone.Serum LH and FSH are low or normal in hypogonadotropic hypogonadism; they are high in testicular failure (hypergonadotropic hypogonadism).