Urinary incontinence is the accidental release of urine. It’s not a disease. It’s a symptom of a problem with a man’s urinary tract
Urine is made by the kidneys and stored in a sac made of muscle, called the urinary bladder. A tube called the urethra leads from the bladder through the prostate and penis to the outside of the body. Around this tube is a ring of muscles called the urinary sphincter. As the bladder fills with urine, nerve signals tell the sphincter to stay squeezed shut while the bladder stays relaxed. The nerves and muscles work together to prevent urine from leaking out of the body.
When you have to urinate, the nerve signals tell the muscles in the walls of the bladder to squeeze. This forces urine out of the bladder and into the urethra. At the same time the bladder squeezes, the urethra relaxes. This allows urine to pass through the urethra and out of the body.
Incontinence can happen for many reasons:

• If your bladder squeezes at the wrong time, or if it squeezes too hard, urine may leak out.

• If the muscles around the urethra are damaged or weak, urine can leak out even if you don't have a problem with your bladder squeezing at the wrong time.

• You can also have incontinence if your bladder doesn't empty when it should. This leaves too much urine in the bladder. If the bladder gets too full, urine will leak out when you don't want it to.

• If something is blocking your urethra, urine can build up in the bladder and cause leaking.

• Stress incontinence happens when you sneeze, cough, laugh, lift objects, or do something that puts stress or strain on your bladder and you leak urine. It can happen when the prostate gland is removed. If there has been damage to the nerves or to the sphincter, the lower part of the bladder may not have enough support. Keeping urine in the bladder is then up to the sphincter alone. The sphincter may be too weak to hold back the urine. And any extra pressure from sneezing, coughing, or straining can cause urine to leak. You can tell when you have it if you release a small amount of urine when you cough, strain, lift something, or change position.

• Urge incontinence is an urge to urinate that’s so strong that you can't make it to the toilet in time. It also happens when your bladder squeezes when it shouldn't. This can happen even when you have only a small amount of urine in your bladder. Overactive bladder is a kind of urge, incontinence. But not everyone with an overactive bladder leaks urine. This kind is caused by bladder muscles that squeeze so hard that the sphincter can't hold back the urine. This causes a very strong urge to urinate. Doctors don't know why this happens, but sometimes it can be caused by other urinary problems. You can tell if you have it when the need to urinate is so strong that you can't reach the toilet in time.

• Overflow incontinence happens when your bladder doesn't empty as it should and then leaks urine later. This happens when bladder muscles are weak or the urethra gets blocked. These blockages can be related to an enlarged prostate or a narrow urethra. It can be caused by something blocking the urethra, which leads to urine building up in the bladder. This is often caused by an enlarged prostate gland or a narrow urethra. Over time, the bladder gets so full that pressure builds up and forces the extra urine to move past the blockage and out of the bladder. Overflow incontinence may also happen because of weak bladder muscles. The symptoms are that you have the urge to urinate, but you can only release a small amount. And you can't control the constant dribbling of urine.

• Total incontinence happens when you are always leaking urine. It happens when the sphincter muscle no longer works.

• Functional incontinence is rare. It happens when you can't make it to the bathroom in time to urinate. This is usually because something got in your way or you were not able to walk there on your own.

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