C6.1) UTI (Urinary Tract Infection) : A urinary tract infection (UTI) is an infection in any part of your urinary system — your kidneys, ureters, bladder and urethra. Most infections involve the lower urinary tract — the bladder and the urethra. Women are at greater risk of developing a UTI than are men.

C6.2) BPH / Prostitis : Also called benign prostatic hyperplasia (BPH), prostate gland enlargement can cause bothersome urinary symptoms. Untreated, prostate gland enlargement can block the flow of urine out of the bladder and cause bladder, urinary tract or kidney problems.
Prostatitis is swelling and inflammation of the prostate gland, a walnut-sized gland situated directly below the bladder in men. Prostatitis often causes painful or difficult urination. Other symptoms include pain in the groin, pelvic area or genitals and sometimes flu-like symptoms.

C6.3) Burning micturation : Painful urination (dysuria) is discomfort or burning with urination, usually felt in the tube that carries urine out of your bladder (urethra) or the area surrounding your genitals (perineum).
Urination also called micturition and voiding. The Urinary Process. Urination is a complex process controlled by muscles of the bladder and sphincter mechanism and by modulatory centers in the central and peripheral nervous systems.