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.
How long a CLP is valid. Itâs valid for 180 days and can be renewed once in a 1 year period. After the 1 year and 2 CLP issuances all applicable knowledge tests would be required to be taken again before another CLP can be issued. An initial CLP will require a 14 day waiting period before a skills test can be taken.