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.
Women whose symptoms of PMS are mild usually see the disappearance of their symptoms on Day 1, while women with more severe symptoms may have PMS or PMDD symptoms that last into Days 3 or 4 of their next menstrual cycle.