You should carefully review what we have said about kidney stones, and then move on to this paragraph. You have already learned there what the difference is between kidney stones and bladder stones in terms of quality and size. The difference between them is that a kidney stone is a little softer and smaller and has a more red cast, while a bladder stone is harder and much larger and has a more black, ashy or white cast. And I learned that if crushed stones sometimes form in the kidneys, then the stones in the bladder can in most cases be separated only after they are passed out in the urine, and that those who suffer from bladder stones are mostly thin, while with kidney stones it is the opposite. and that children and those close to them in age are more likely to suffer from bladder stones. And here we will also say that with stones in the bladder, the urine is whitish, with a sediment that is not red, but rather white or ashy; Sometimes the urine is thick, with an oily sediment, but more often it is thin, especially at the beginning of stone formation. Bladder stones do not cause as much pain as kidney stones because the stone in the bladder is in a free space unless it is blocking the urine; the pain from the stone intensifies when it enters the urinary canal. The stones in the bladder are rougher, since they are in a cavity and something can build up on them, making them rough; for the same reason they are larger, because their container is more extensive. Sometimes it happens that there are two stones or more in one bubble; they rub against each other and a lot of sandy crumbs form between them. Often, along with sandy sediment, there is a scaly sediment in the bladder, which is formed as a result of peeling the surface of the bladder with a hard stone.
With stones in the bladder, there is constant itching and pain in the penis, at its root and on the pubis due to the participation of the penis in the bladder disease. The stone sufferer often plays with his penis, especially if he is a boy. With this disease, an erection constantly occurs, and sometimes it leads to prolapse of the rectum and retention of urine, and the urine that comes out comes out with force, because it breaks out of a tight space under the pressure of gravity from behind. Sometimes in the last stage of the disease the patient urinates against his will and every time he finishes, he immediately wants to urinate again; the reason for this is a stone that requires release, just as accumulated urine requires release. Urination with blood often occurs due to a scratch from a stone, especially if it is large and hard. It often happens that the urine is blocked, but as soon as the patient lies on his back, raises his hips and moves them, the stone comes out of the canal. If he presses on the pubis, urine will spurt out, and this is strong evidence of the presence of a stone.
Sometimes this is facilitated if the patient kneels and presses his limbs one against the other, and sometimes the stone is easily dislodged by inserting a finger into the rectum and moving it from its place with the patient in the same position. Often other methods of pressure, pressing, lying supine or kneeling, which experience indicates, also help. When such methods do not work, a catheter is used to remove the stone; if there is something in the canal, and the catheter hits a foreign body and pushes it, and urine flows, then this is also solid evidence of the presence of a stone. If the catheter is difficult to insert, then it is better not to do it abruptly and with force. Sometimes the catheter indicates, by the substance adhering to it, what material the stone was formed from. A small stone blocks urine more than a large one, because a small one gets stuck in the canals, and a large one sometimes quickly comes out of the canal. Know that bladder stones often form in northern countries, especially in children.