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The abrupt jump in his PSA combined with his symptoms are most certainly a sign of prostatitis. He needs to get into see his doctor for a prostate examination and a urine culture and he will likely need to be placed on a course of antibiotics to treat this. Your concern is probably prostate cancer. This would be very unlikely with this jump in PSA. He should have his PSA repeated A couple months after he completes a 30 day course of antibiotics. Hope this helps and let me know if you have questions.