There may be stones in the bladder for various reasons. Stones can be caused by a bacterial infection anywhere from the kidneys to the bladder. It has been seen that stones are formed due to many factors. However, the main thing is that there are changes in the composition of the blood due to different diseases of the body and the composition of the food. This also causes variation in the amount of urine excreted or excreted. The change results in the formation of granules of excess material which is gradually excreted in the urine , and these granules are at one time converted into stones. Bladder stones are divided into two parts 1. Primary , 2. Secondary. Primary stone of the bladder refers to the stone which is formed in sterile urine. It usually originates in the kidneys and travels to the bladder via the renal canal, where it grows in size. Secondary stones in the bladder occur for a variety of reasons. E.g. Infection , obstruction of the bladder, obstruction of the bladder emptying or the presence of an external object in the bladder , e.g. Molten yarn , metal wire or pieces of catheter. Rock material Stones are produced with different types of materials. These include oxalate , uric acid and urate , cysteine , ammonium , magnesium and calcium phosphate. Symptoms Men are eight times more affected than women. It can be asymptomatic. For other reasons, cystoscopy or abdominal X-ray or ultrasonogram may be caught suddenly. However, bladder stones can cause a number of symptoms , such as Frequent urination during the day. Feeling that the bladder is not completely empty. Usually feeling pain at the end of urination. Increased pain when moving. Drops of fresh blood with urine or at the end of urination. Occasional cessation of urination during urination. Sudden stopping of urination.