What causes blood in the urine in men?

The causes of hematuria (blood in the urine) in males can generally be categorized as follows: 1. **Urinary tract infections (UTIs)**: Such as urethritis, cystitis, or pyelonephritis, bacterial infections can cause inflammation of the urinary tract mucosa, leading to hematuria. 2. **Stones**: Urinary tract stones, especially bladder or kidney stones, may scrape the inner walls of the urinary tract during movement, causing bleeding. 3. **Tumors**: Tumors such as bladder cancer, kidney cancer, or prostate cancer may cause painless hematuria, which is a common cause of blood in the urine. 4. **Prostate issues**: Prostatitis or benign prostatic hyperplasia (BPH) can also cause hematuria, especially in older men. 5. **Kidney diseases**: Conditions such as glomerulonephritis or other kidney disorders may lead to hematuria. 6. **Medications**: Certain medications, such as anticoagulants, may also cause hematuria. If hematuria occurs, prompt medical attention is advised, along with relevant diagnostic tests such as urinalysis, ultrasound, CT scan, or cystoscopy.