Greetings there, thanks for your question. I am Dr Asanghanwa Carlson. Blood in urine is an abnormal finding and is a cause for urgent medical attention. The fact that your husband passes out blood from his penis,post urination dribbling, has lower back and testicular pains and has also lost weight is a serious cause for concern as there could be a dangerous underlying condition such as a prostate tumour. I would advice you do an seek urgent medical care from a urologist who is a specialist who deals in diseases of the male genital and urinary tract and associated organs. While wishing him a quick recovery, accept the best of regards. Key word: Urologist consultation