My brother was autistic and had mental retardation which did not allow him to speak. He began walking with a limp, and slept alot. My mom took him to his family doctor, and then ran some test. He was very anemic so they sent him to a hospital in the next city. They gave him a blood transfusion and sent him on his way. A few weeks later he was back again with the same symptoms. The doctor said we had to figure out why he was losing blood this way she asked us to take him to the hospital, we did, they did a battery of tests and said he had mono. My brother by the way was 37.
He was very incoherent so we took him to the hospital again, this time they sent him home saying he was probably still feeling the effects of the mono. One afternoon, a couple of weeks later, he collapsed. He was conscious but he just collapsed. I happened to be there and told her lets take him to another hospital. Which we did. The time we talked to the doctor about the mono, he said no this isn't mono. They ran tests, and the same day they had a diagnosis of prostate cancer, they just had to do a biopsy to see how far advanced it was. Unfortunately it was fourth stage.
My brother suffered greatly before he died, and I encourage all men, no matter what your age, to be screened for prostate cancer.