PCOS causes acanthosis nigricans also. Acantocytes are special skin cells. Nigricans means black in Latin. That thing looks like thickened pigmented skin. When you touch it, it feels like velvet. Usually it happens in axilla, neck, below breast, in inner thigh and vulva. So, mostly all those places where skin folds.

The treatment for PCOS includes different medications: oral contraceptives, progesterone, glucocorticoids, ketoconazole, spironolactone, cyproterone, flutamide, cimetidine, finasteride, ovarian wedge resection, laparascopic electoracutery, mechanical hair removal, etc.

All methods break cycle of overproduction. The medications are either hormones themself or hormone-like substances that occupy receptor site and prevent regular hormone to work.

The medications act on different levels. Normal hormones have very complicated regulation. There are loops and feedbacks in pathways.

To suppress a hormone production or action, you give similar hormone or another hormone or non-hormone at all, that goes to feedback loop and breaks it and so on. It's really long separate discussion.

Basically, you either decrease hormone production or shift ratio toward female hormones.

Another way, best probably, is weight loss. No fat cells - no conversion of andrgoens etc… You can make conclusions yourself. It's first line of treatment.

For a simple follicular ovarian cyst (not PCOS) doctor rules out ectopic pregnancy. Then he may send patient home and repeat pelvic exam in 6-8 weeks. Especially, if cyst was small, less than five cm in diameter.

For larger cysts, doctor would order pelvic ultrasound.

Most follicular cyst will resolve on their own in six to eight weeks. Though, a physician may give oral contraceptives. Again, this suppresses stimulation of cyst by hormones from hypophysis. The hormones are named gonadotropins.

If cyst is still there after 6-8 weeks, a suspicion arises that cyst maybe malignant. Then doctor orders other studies. CT scan. Physician may perform surgical procedures also. He looks what is this cyst really.

Corpus luteum cyst is usually not treated. However, oral contraceptives may be used.

Rupture of any kind of those cysts leads to another story. Acute pain, bleeding into peritoneum. Sometime bleeding is very severe and is true emergency. You need also to distinguish other process in abdomen. For example, appendicitis looks similar. You can treat mild case of non-complicated cyst rupture with just observation. Appendicitis almost always requires surgery.

There are many other problems arise. Surgeon scratches his head: what's going on? Is this this or is this that? Here is CT scan gives big advantage.

Now, going back to question of Ms. L.

If cyst was infected, I don't' see a reason why a ruptured cyst wouldn't become infected. Cyst content is very nutrient-rich. Remember? All those cells and their products are dedicated to feeding oocyte (future baby). Should be very tasty for any bacteria.

Rupture may cause significant bleeding as well. This blood is also different from blood in your vessels.

This blood is sitting in pelvis, not moving, quickly clotting. Clotting prevents entry of white blood cells. "No flow" prevents entry of antibodies. Absence of flow prevents entry of other protective chemicals (complement etc).

So, it is very nutrient-rich media for bacteria growth.

They can go wild. Why not? If a female had another pelvic infection before, that infection can flare up. In a normal person peritoneal cavity should be sterile. However, any gynecological or gastrointestinal infection may supply bacteria. Now, mix these bacteria with content of leaking cyst. It just destined to become infected.

Actually Ms. L later answered her own question in another e-mail. She had cysts multiple times and they became infected several times.

So, to answer question: Will ruptured cyst become infected? Not necessarily. Rather not. Can it become infected? Yes.

Aleksandr Kavokin MD/PhD, Phila