During a normal<unk>  cycle (which accompanies the menstrual cycle) of a sexually mature woman, one or more follicles grow in the ovaries. The oocyte in the follicle matures to prepare for potential fertilisation. As the cycle progresses, a smaller number of dominant follicles (typically only one) begin to stand out, and reach a maximum size of about 20mm around the middle point of cycle. By this stage, the oocyte has finished maturing into an ovum (an egg), and ovulation occurs - the follicle ruptures and releases the ovum. A ruptured follicle forms a temporary cyst - a corpus luteum - which produces hormones to continue the cycle and mature the uterine lining. In cases of dystrophic and sclerotic changes in<unk>  tissue, acute and chronic inflammatory processes in the uterus, or in polycystic ovary syndrome and some other diseases, as well as the result of medication that stimulate ovulation, certain irregularities in ovulation process and corpus luteum formation occur. As a result, blood vessels in the ovary contract, become dilated, and increase intra-ovarian bleeding. A hemorrhage can then occur in the corpus luteum due to the fragility of blood vessels, causing a hematoma. This is accompanied by pain, weakness, dizziness, nausea, vomiting, pale skin, and/or fainting. If left untreated, internal bleeding may increase and become a threat to the individual's health and life. Other possible causes of<unk>  rupture include abdominal trauma, excessive physical stress, vigorous sexual intercourse, horseback riding, etc.
Ovarian apoplexy
Ovarian torsion
Ovarian vein syndrome
Ovarian cyst
Tubo-ovarian abscess
Ectopic pregnancy
Salpingitis isthmica nodosa
Ovarian pregnancy