Answer by  
                                                                                          Robbie37 (93)
                                                            
                          
                          
                                                           The most common cause of burning with urination, or pyuria, is a urinary tract infection. Other causes include: a sexually-transmitted infection, urethritis (inflammation of the urethra), or even overly concentrated urine. A further cause of pyuria, is skin irritation in the genital area caused by skin rash, infection, or mechanical irritation of the area.