I'm 59 and my PSA went from 3.5 to 5.5 in 6 months. I have a history of BPH and previously my PSA was in the 1.5 to 2 range. This spike sent me to the Urologist and I had a biopsy that ruled out Prostate cancer. I'm on 2 years of observation for Prostate cancer and am on some drugs to help me pee. The sudden rise could be the result of BPH. If your dad had BPH you could have the same condition. You could have prostatitis, but I had 4-5 urine test come back clean for anything, including STD's and STI's. After an exam my Urologist determined that my prostate was "somewhat inflamed". After my biopsy he explained that a PSA doesn't necessarily mean Prostate cancer and it also doesn't mean any underlying health concerns. My urologist is a little bit blunt but work with yours to help mitigate some of your anxiety. Please update this forum as to what happens. I'm less anxious about my prognosis after joining this group, hope you will be as well.