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.
Premature menopause (256.31), also documented as early menopause or premature ovarian failure, is the natural loss of ovarian function in women younger than the age of 40 (AHA Coding Clinic for ICD-9-CM, 2001, fourth quarter, page 41).