Patient, female, 23 years old. She had not have her regular menstrual periods for six month since her last period in November 2020. She was diagnosed with polycystic ovary syndrome (PCOS) by her family doctor and specialist. She demonstrated many symptoms, like milky nipple discharge, hair loss, headache, excess facial hair, pelvic pain, acne, stomach bloating, weight gain, hard to fall asleep, easy to wake up during sleep, and back pain. She was looking for acupuncture treatments for her amenorrhea due to PCOS. The skilled acupuncturist Dennis applied his acupuncture approach to treating the patient. During each session of the acupuncture treatment, the patient was able to feel strong qi (energy) circulating along her arms, legs, and her trunk and she felt really relaxed in her mind and her whole body. With multiple sessions of acupuncture treatment, she had her menstrual periods back last week after six months of amenorrhea (absence of menstrual periods). The patient was so happy to have such a successful result from multiple sessions of the acupuncture treatment. This case shows acupuncture can treat many difficult cases such as amenorrhea due to polycystic ovary syndrome (PCOS).