As you said you are CKD stage 4 and you are not yet diaysis dependent. Itching is one of the symptom of CKD. It is called renal itch or uremic pruritis
. Mechanism of renal itch is still not yet understood properly and hence treatment of this has been less than satisfactory. Various drugs are used with some benifit like naltrexone
, ondancetron, oral acivated charcoal or ultraviolet-B irradiation. Dont take these drugs without nephrologists consultation.
EPO and iron injections are best for your Haemoglobin
is not useful. Consult your nephrologist again.