Right-Side Lower Back Pain Related to Urinary Pressure - Urology

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Lower back pain?


Hello doctor, my question is that after drinking a lot of water at night, I experience pain on the right side of my lower back in the morning.
I'm not sure if it's due to pressure from holding my urine.
However, after I use the restroom, the pain disappears.
I've tested this and found that the pain only occurs in the morning after holding my urine overnight.
This has been happening for a while now, and I haven't experienced this issue before.

james, 50~59 year old female. Ask Date: 2021/08/09

Dr. Du Shixi reply Urology


Hello: Your condition should be evaluated by the urology department at the hospital to check for any abnormalities in the right kidney during urination.
If the tests are normal, we can explore other possible causes.
Wishing you good health.

Reply Date: 2021/08/09

More Info


The symptoms you are experiencing, specifically the right-side lower back pain that occurs after holding in urine overnight, could be related to several underlying issues, primarily involving the urinary system and possibly the musculoskeletal system.
When you drink a lot of water before bed and hold your urine overnight, your bladder fills to capacity. This can lead to increased pressure on the surrounding structures, including the kidneys and the lower back. The kidneys are located in the posterior abdominal cavity, and any significant distension of the bladder can cause discomfort or pain in the lower back, particularly on the side where the bladder is exerting more pressure.
In your case, the fact that the pain resolves after urination suggests that the discomfort is likely related to bladder distension. When the bladder is full, it can push against the surrounding organs and tissues, leading to referred pain in the lower back. This is not uncommon, especially if you have a history of urinary retention or if your bladder has become more sensitive over time.

Additionally, if you have been experiencing this issue for a while, it may be worth considering other factors that could contribute to your symptoms. For instance, if you have had any recent urinary tract infections (UTIs) or bladder inflammation, these conditions can also lead to discomfort in the lower back. UTIs can cause symptoms such as increased frequency of urination, urgency, and pain during urination, which could exacerbate the sensation of pressure in the bladder and lead to referred pain in the back.

Another possibility is that there may be musculoskeletal factors at play. If you have been engaging in activities that strain your back or if you have poor posture while sitting or sleeping, this could contribute to discomfort in the lower back, particularly when combined with the pressure from a full bladder.

To address your symptoms, here are some recommendations:
1. Hydration Management: Consider adjusting your fluid intake before bedtime. While staying hydrated is important, reducing the amount of fluid you consume in the evening may help minimize the need to hold urine overnight.

2. Frequent Bathroom Visits: Try to urinate more frequently during the day and avoid holding urine for extended periods. This can help reduce the pressure on your bladder and lower back.

3. Posture and Ergonomics: Pay attention to your posture, especially when sitting or sleeping. Ensuring that your back is well-supported can help alleviate some discomfort.

4. Medical Evaluation: If the pain persists or worsens, or if you experience additional symptoms such as fever, chills, or changes in urination patterns, it is essential to seek medical attention. A healthcare provider may recommend tests such as a urinalysis or imaging studies to rule out any underlying conditions, such as a urinary tract infection, kidney stones, or other renal issues.

5. Pain Management: Over-the-counter pain relief medications, such as ibuprofen or acetaminophen, may help alleviate discomfort if needed. However, consult with a healthcare professional before starting any new medication.

In conclusion, while your symptoms may be related to bladder distension and pressure on the lower back, it is crucial to monitor your condition and seek medical advice if necessary. Understanding the relationship between urinary pressure and back pain can help you manage your symptoms effectively and maintain your overall health.

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