Polycythemia can result from internal problems with the production of red blood cells. This is termed primary polycythemia. If polycythemia is caused due to another underlying medical problem, it is referred to as secondary polycythemia.
PMS can last 1-2 weeks. Premenstrual syndrome (PMS) is characterized by a number of symptoms related to a womanâs menstrual cycle. They occur a week or two before monthly menstruation begins, and ordinarily, they disappear at that time.
Most PMS symptoms, whether physical or emotional, are progesterone-related. Initially, they may occur for a few days before the period. The more severe the deficiency, the longer they last. They may persist from the time of ovulation until the onset of the period.