My father is cancer patient. Urinary bladder metastatic. He is undergoing immunotherapy and one cycle is due. He is under palliative care aaco. To doctors and takes pain medicines regularly now. Due to lymh blockage he have swelling in scrotum and penis earlier. Now the hip region is also becoming stuff or tight. Any medications that can do some improvement (his creatinine is 3 or more)? And he was taking lasix earlier but doctor told not to take that as he is catherized. So I hope this would be not the reason?