What disease causes inability to urinate?

Urine is a waste fluid produced by the human body. When sufficient urine accumulates, it must be expelled from the body—a normal physiological function. However, some individuals experience the urge to urinate but are unable to void upon reaching the restroom. This phenomenon can occur in both men and women and often causes significant discomfort. So, what medical condition does “inability to urinate” indicate? Below, we address this question.

What Disease Causes Inability to Urinate?

Generally speaking, inability to urinate (urinary retention) may result from urinary tract infections such as urethritis, prostatitis, urinary tract infection (UTI), or cystitis—all common urological conditions. Additionally, urinary calculi—including urethral or bladder stones—can also obstruct urine flow. Besides pharmacological treatment, patients with severe disease may require physical interventions or surgical therapy. Other potential causes include urethral stricture or traumatic urethral rupture, both of which impair urinary voiding. In patients with benign prostatic hyperplasia (BPH), prostate enlargement compresses the urethra, potentially leading to complete urinary obstruction in advanced cases. Frequent sexual activity may cause excessive congestion of the prostate gland, resulting in dysuria or urinary retention. Psychological factors—such as anxiety or high stress levels—can likewise contribute to difficulty urinating. Therefore, individuals experiencing urinary retention should seek prompt medical evaluation and treatment.

Knowledge Extension: What Should Men Do If They Cannot Urinate?

1. Catheterization

Urinary retention in men commonly occurs as acute urinary retention secondary to benign prostatic hyperplasia (BPH). Excessive prostate enlargement leads to bladder outlet obstruction, thereby causing urinary retention. This constitutes a urological emergency requiring immediate intervention—typically via placement of an indwelling urinary catheter to drain accumulated urine. During initial catheterization, it is advisable to drain approximately 300 mL of urine to avoid rapid bladder decompression, which may trigger detrusor muscle overcontraction and subsequent hemorrhage.

2. Suprapubic Cystostomy

Patients with neurogenic bladder may present with weak or absent urinary stream due to impaired bladder contractility or sphincter dysfunction. In such cases, suprapubic cystostomy is often performed to establish continuous urinary drainage. Moreover, urological disorders affecting men can significantly impact not only urinary health but also fertility and sexual quality of life. Thus, for accurate diagnosis and appropriate management, consultation at a reputable andrology or urology specialty hospital is strongly recommended.

The above outlines the possible causes of urinary retention. We hope this information proves helpful.