Conversation: The conversation between human and AI assistant.
[|Human|] I am 95 years old, and I get bruises quite frequently and all over my body. Recently I had them on my legs, and before the bruises appeared, I had this terrible itcht on the bottom of my legs. The following day my carer pointed out the bruises to me. I think it is important to let you know that I do have Kidney problems, for that I go two times a week for dialysis . I am physically well, what do you think is causing the buises to appear and then later go away. Thanking you
[|AI|]  In patients suffering from chronic renal failure, the platelets usually develop a dysfunction. They are responsible for preventing small bleeds. But if they cease to function then the patient develops a propensity for small hemorrhages which usually develop spontaneously. As soon as the dialysis session is completed the platelets will function optimally for some time. If the problem goes beyond control then a particular medication is given which is a synthetic analogue of desmopressin. You should consult your nephrologist who will guide you in this respect.