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.
Premenstrual syndrome (PMS) is a group of symptoms linked to your menstrual cycle. Typically, youâll experience PMS symptoms one to two weeks before your period. Those symptoms usually stop after your period starts. The symptoms of PMS can appear to be very similar to those of early pregnancy. Read on to learn how to tell the difference.