Left flank pain wen bladder is full and severe pain in lt flank while urinating. Pain subsides after micturation, again becomes pronounced after refil?

Exam. You need a full examination at a clinic. Causes of bladder pain include urinary tract infection, interstitial cystitis, and bladder cancer. The earlier you are properly diagnosed the better chance you have for a full recovery. I wish you the best with your health and I am available for consults with you on HealthTap.