What symptoms do women have before menopause?

When a woman reaches the age of 50, the probability of menopause is very high, which should be a premenopausal symptom. The symptoms of female menopause include excessive or insufficient menstrual blood, abnormal menstrual cycle, hot flashes and excessive sweating, emotional instability, impatience, irritability, self-blame, nervousness, stubbornness, inattention, insomnia, headache, memory loss, neurasthenia, depression and other symptoms, and serious cases are like mental illness.