What causes blood in urine
Recently, "blood in urine" has become a hot topic in the health field, with many netizens asking about the causes and coping methods of related symptoms on social platforms. This article will combine the hot discussions on the Internet in the past 10 days to provide a structured analysis of the common causes, accompanying symptoms and medical advice of blood in urine to help readers understand this issue scientifically.
1. Analysis of common causes of blood in urine
According to medical information and discussions among netizens, blood in urine (hematuria) can be divided into two categories: visible to the naked eye and found under a microscope. The following are statistics of frequently mentioned causes:
| Ranking | Cause type | Proportion | Typical symptoms |
|---|---|---|---|
| 1 | urinary tract infection | 32% | Frequent urination, urgent urination + fever |
| 2 | Urinary system stones | 28% | Lumbar cramps + hematuria |
| 3 | Nephritis | 18% | Proteinuria + edema |
| 4 | Tumors (bladder/kidney) | 12% | Painless hematuria + weight loss |
| 5 | Others (trauma, drugs, etc.) | 10% | Medication history/trauma history |
2. Comparison of hematuria characteristics among different groups of people
Judging from the discussion data, there are differences in the causes of hematuria in different groups:
| crowd | primary cause | Secondary common causes |
|---|---|---|
| children | acute nephritis | Urinary tract malformations |
| young adults | urinary tract stones | Hematuria after strenuous exercise |
| middle-aged and elderly men | prostate disease | Bladder tumors |
| Women of childbearing age | urinary tract infection | Menstrual contamination (pseudohematuria) |
3. Recent hot topics and related discussions
1."Milk tea cup hematuria" phenomenon: Some netizens shared that brown urine appeared after drinking a large amount of milk tea. The doctor explained that the urine may be concentrated or pigmented due to dehydration, and it needs to be distinguished from true hematuria.
2.Hematuria during COVID-19 recovery period: Some positive patients reported transient hematuria after recovery, which experts believe may be related to immune response or drug side effects after viral infection.
3.Rhabdomyolysis for fitness enthusiasts: The case of "soy sauce-colored urine" after high-intensity training has attracted attention. Myoglobinuria caused by muscle damage is easily confused with hematuria.
4. Suggested Guidelines for Medical Examination
According to the popular science data of tertiary hospitals, it is recommended to follow the following investigation process:
| Check items | Troubleshooting goals | Applicable situations |
|---|---|---|
| Urine routine | Red blood cell morphology/proteinuria | Must do initial screening |
| Urology B-ultrasound | Stones/tumors/structural abnormalities | Non-invasive choice |
| CT urography | Microtumor/complex stones | Suspected organic disease |
| Cystoscopy | Bladder mucosal lesions | Recurrent painless hematuria |
5. Prevention and precautions
1.Drink more than 2000ml of water daily, reduce the risk of stones. Netizens have actually tested "lemon water therapy" to be effective in preventing uric acid stones.
2.Avoid holding in urine, especially for women, wiping correctly (from front to back) after urinating can reduce the probability of infection.
3.Be wary of drug effects: Anticoagulants, chemotherapy drugs, traditional Chinese medicine Guanmutong, etc. may cause hematuria and require regular monitoring.
4.People over 40 years old: Even if the hematuria disappears on its own, the possibility of tumor should still be investigated. Recently, some experts have suggested that "painless hematuria" be included in early cancer screening indicators.
Note: The data in this article are synthesized from public discussions on Weibo health topics, Zhihu medical columns, popular science articles by Dr. Dingxiang, etc. The statistical period is the last 10 days (November 2023). Please refer to the opinions of clinicians for specific diagnosis and treatment.
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