Pcos can be genetic something to do with premature balding of men. (My dad and grandad and uncle so could ve either side.) My sister does not have it. Mine did seem to start about 17 when my periods went crazy every 2 weeks. (Stress of a levels) The symptoms generally worsen with excess weight so important to maintain a healthy weight (They think it may be to do with vit d levels , my sister has lived abroad a lot and i am too pale to sunbathe) Im not sure if it gets worse with age. Does she have symptoms? (I wish dr had told me what the cause of weird periods was i could gave ttc a lot earlier - id been with OH 9 years. But ultimately the main issue was MFI anyway. I think PCOS affects people very differently, i have bmi 22 no excess hair or acne.
Haven't got time to re-type it all now, but was going to say that the vitamin D thing does hold true to my experiences. That was all news to me - I hadn't heard of any possible links before you mentioned it.
There is some evidence to suggest it can pass down the male line (male pattern baldness and my Dad is bald). However, there is still as yet no full understanding as to exactly how and why PCOS does occur.
Its a very individualistic disorder and affects each woman with it very differently. What may be a problem for one is not for another.
The cystic follicles associated with PCOS can and do disappear - only to be replaced by further cystic follicles. These follicles tend to be small. Some of these are dormant whilst others contain hormones, one may contain an egg. The polycystic ovary can appear larger in size than a "normal" sized ovary. A normal sized ovary is about the size of a walnut.