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) describes a wide range of severe, recurrent symptoms that occur from several days to two weeks before your period. PMS affects up to 75 percent of women in their childbearing years. The symptoms of PMS can appear any time between.