Final answer:
A kidney stone can cause flank or back pain that is colicky and severe, along with symptoms such as nausea, vomiting, and hematuria.
Step-by-step explanation:
A kidney stone can cause a variety of symptoms, but there are specific signs that may indicate that it is a kidney stone. One of the main symptoms is flank or back pain that is colicky and severe. This pain is often described as the worst pain ever experienced and may be felt from the loin to the groin. Other possible symptoms include a sharp pain in the back of the chest on inspiration, nausea, vomiting, and hematuria (blood in urine) due to damage to the urinary tract lining.