<unk>  is a type of pain commonly caused by kidney stones or accumulation of crystals.
These kidney stones cause interference with the flow of urine and the kidney may swell up causing pain<unk> .
The pain typically begins in the kidney area or below it and radiates through the flank until it reaches the bladder.  The pain is<unk> ky in nature, meaning that it comes on in spasmodic waves as opposed to being a steady continuous pain. It may come in two varieties: dull and acute; the acute variation is particularly unpleasant and has been described as one of the strongest pain sensations felt by humans.
Depending on the type and sizes of the kidney stones moving through the urinal tract the pain may be stronger in the<unk>  or bladder area or equally strong in both.
Renal colic
Pyonephrosis
Pyelonephritis
Hydronephrosis
Kidney stone
Kidney abscess
Bladder stone
Nephrolithiasis