Dialysis is done when our kidneys fail.As your kidneys failed, the level of creatinine in your blood rose. The amount of creatinine in your blood is a factor used in calculating your GFR (glomerular filtration rate, a measure of kidney function). As creatinine goes up, GFR goes down. In kidney failure some of you may have nausea, vomiting, a loss of appetite, weakness, increasing tiredness, itching, muscle cramps (especially in the legs).
Usually dialysis is done 2-3 weeks depending on the patients condition. It is eben possible to be done daily. Dialysis is done to to remove salts and waste products. It is ok for us to live with it for some time. That is there is a specific concentration for every waste product to become lethel to our body And it will take more than 15 day for them to become lethel.
Also 15 day dialysis is done for people with some kidney damage .for people with total kidney damage daily dialysis is preferred.