Bladder stones are more likely to be seen in males who are 50 or above age.
Some conditions that can increase the risk of bladder stones include,
An obstruction
Any condition or circumstance that is blocking the urination flow from the bladder to the urethra (the tube that passes the urine out of your body) may cause the formation of bladder stones. There are various reasons for this, but the most common is prostate enlargement.
Nerve damage
Spinal cord injuries, stroke, diabetes, a herniated disk, Parkinson's disease, and other issues can injure the nerve that regulates the function of the bladder.
It's possible to have a condition obstructing the bladder outlet and nerve damage. This having together may increase the risk of bladder stones.