I've a cat I took responsibility for a year ago. He is now 2 years old. He was 'fixed' before I got him. He was never declawed. He is usually REALLY good about not scratching furniture or things he shouldn't. Until Saturday morning. I left my closet open a crack, and he is a curious fellow, and loves the closet for some reason.
Defects in the chromosomes can cause premature menopause. For example, women with Turner's syndrome are born without a second X chromosome or without part of the chromosome. The ovaries don't form normally, and early menopause is often the result.
Less common causes. Cancer of the cervix, vagina, or lining of the uterus (endometrial cancer) can cause bleeding, usually after menopause. Cancer is not a common cause during the childbearing years. Certain hormonal disorders (such as hypothyroidism) are a less common cause of bleeding.