What are common signs that a kidney stone has moved into the bladder?

Painful urination and hematuria are common signs that indicate a kidney stone has moved into the bladder. When a stone travels down the ureter and enters the bladder, it can irritate the bladder lining, leading to discomfort during urination, also known as dysuria. This irritation can trigger a sensation of urgency and increased frequency of urination as the body attempts to expel the stone. Additionally, hematuria, or blood in the urine, can occur due to the stone causing micro-trauma to the urinary tract during its passage, resulting in bleeding.

In contrast, headaches, nausea alone, and high blood pressure do not typically indicate that a kidney stone has moved into the bladder. Headaches can arise from a variety of unrelated factors, while nausea is more commonly associated with kidney stones when they are still in the renal system rather than having moved to the bladder. High blood pressure is not a direct symptom related to the movement of kidney stones and can be influenced by many other conditions. Thus, painful urination and hematuria are the appropriate signs to look for in this scenario.