There is no authoritative information on the 10 major signs of amenorrhea. Amenorrhea may be caused by diseases such as early onset ovarian insufficiency, polycystic ovary syndrome, uterine adhesions, and other diseases such as vaginal atresia, and the symptoms vary. 1. Early-onset ovarian insufficiency: Patients with early-onset ovarian insufficiency are caused by chromosomal abnormality, viral infection and other factors, and the main symptoms of the patients are amenorrhea, hot flashes, insomnia and so on. As a result, patients will have the symptoms of amenorrhea. 2. Polycystic Ovary Syndrome: Polycystic Ovary Syndrome is considered to be caused by a combination of genetic and environmental factors, and patients will have symptoms such as amenorrhea, hirsutism and acne. 3. Uterine adhesion: Uterine adhesion is usually caused by trauma and infection, and the typical symptoms of patients are amenorrhea and cyclic abdominal pain. 4. Others: Vaginal atresia, hymenal atresia, Turner’s syndrome and other diseases can also lead to amenorrhea. Patients with amenorrhea should consult a doctor in time and follow the doctor’s instructions for medication.