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.
PMS Symptoms & Causes. PMS symptoms usually start 7 to 10 days before menstrual flow begins and end shortly thereafter. PMDD (premenstrual dysphoric disorder) is the term used to describe severe PMS symptoms. This conditions follows the same cycle and range of symptoms, but produces a more debilitating outcome. But even for general PMS, some months PMS symptoms can be worse or better than others. Possible symptoms of PMS include: (3)