Patients with kidney stones usually require plenty of water and appropriate pain medication to pass the painful objects through the urinary tract, and some people require surgery in extreme cases, according to the Mayo Clinic. MedicineNet explains that kidney stones pass from the kidneys, into the ureter, through the bladder and into the urethra before being flushed out of the body.
Intense pain, comparable to that of childbirth, waxes and wanes as kidney stones pass through the urinary tract. Patients who arrive at an emergency room are often given intravenous narcotics and anti-inflammatory and antinausea medicine. After leaving the medical facility, patients can be prescribed Tamsulosin to help stones pass. A simple, small kidney stone may take two to three weeks or longer to exit the body, according to MedicineNet.
Pain begins in the lower flank or the back. Once a kidney stone passes into the bladder, intense pain goes away while dull pain in the lower back remains for hours or days afterward, according to MedicineNet. The most painful part of passing a kidney stone is when the object is in the narrow ureter between the kidney and bladder.
Kidney stones range in size from a small crystal of sugar up to a table tennis ball. These stones form when chemicals, minerals and salts in the kidney crystallize and form larger particles, according to WebMD. Kidney stones are typically asymptomatic until they are dislodged from the kidney and start pushing into the ureters.