Is the lack of sexual desire a deficiency of kidney yin or kidney yang?

Lack of libido is usually caused by Kidney-Yang deficiency, and some patients with Kidney-Yin deficiency may have abnormal or frequent erections of the penis.
Loss of libido is usually caused by kidney yang deficiency, and can also be accompanied by spermatorrhea, premature ejaculation, women can see infertility, leukorrhea clear and thin in abundance. In addition to the above symptoms, patients with Kidney-Yang deficiency may also suffer from coldness, cold pain in the waist and knees, fatigue, easy fatigue, long and clear nocturia or reduced urine output.
In addition to the above symptoms, patients with Kidney-Yin deficiency may also suffer from abnormal or frequent erection of the penis, spermatorrhea, premature ejaculation, decreased menstrual flow or amenorrhea, soreness of the waist and knees, tinnitus, insomnia and excessive dreaming, emaciation, heartburn, warmth of the hands and feet, and night sweating (sweating abnormally after falling asleep, but stopping after waking up).
If you have symptoms, you should take the medicine under the guidance of a professional physician, do not take the medicine blindly by yourself to avoid delaying the condition or producing adverse reactions.