What is the cause of lower abdominal pain after having sex with my girlfriend?

Sex life is an indispensable spice in married life. Now that society is relatively open, it is normal for boyfriends and girlfriends to have sexual relations during their relationship. There is no law prohibiting sexual relations between boyfriends and girlfriends, but it is still condemned from a moral point of view. Many male friends said that they had lower abdominal pain after being intimate with their girlfriends. What is this disease?

Prostatitis refers to a prostate disease caused by a variety of complex reasons, with urethral irritation symptoms and chronic pelvic pain as the main clinical manifestations. Prostatitis is a common disease in urology, and ranks first among male patients under 50 years old in urology. Despite the high incidence of prostatitis, its cause is still not very clear, especially for non-bacterial prostatitis, so its treatment focuses on improving symptoms. In 1995, the National Institutes of Health (NIH) of the United States developed a new classification method for prostatitis: Type I: equivalent to acute bacterial prostatitis in the traditional classification method, Type II: equivalent to chronic bacterial prostatitis in the traditional classification method, Type III: chronic prostatitis/chronic pelvic pain syndrome, Type IV: asymptomatic prostatitis. Among them, nonbacterial prostatitis is far more common than bacterial prostatitis.

Causes

Only a few patients have an acute history, while most present with a chronic, recurrent course. The main pathogenic factors of type I and type II prostatitis are pathogen infection, mainly Escherichia coli, Klebsiella, Proteus and Pseudomonas aeruginosa. The pathogens invade the prostate through urine, causing infection. Pathological anatomy confirms that prostatitis lesions are generally confined to the peripheral zone, where the glandular ducts open into the posterior urethra in the opposite direction to the vertical line of urine flow, which can easily cause urine reflux. The glandular ducts in the central zone and transitional zone run in the same direction as urine flow and are less susceptible to infection.

The prostate has as many as 15 to 30 ducts opening on both sides of the seminal colliculus, and the prostate epithelium has a strong secretory function. The gland is small but has a strong secretory function, and the duct is narrow, which causes the prostate to be compressed and blocked under the influence of multiple factors, easily causing congestion and accumulation of secretions, thus creating conditions for the occurrence of infection. This is also the histological basis for the easy recurrence of prostatitis. Frequent sexual intercourse, excessive masturbation, long periods of sitting, cycling, horseback riding, alcoholism, eating too much spicy food, catching a cold, etc. can all be triggering factors.

The pathogenesis of type III prostatitis is unclear, its etiology is very complex, and there is widespread controversy. Most scholars believe that the main causes may be pathogen infection, urination dysfunction, psychological factors, neuroendocrine factors, abnormal immune response, oxidative stress theory, lower urinary tract epithelial dysfunction, etc. There is a lack of research on the pathogenesis of type IV prostatitis, and some of its causes and pathogenesis may be the same as those of type III.

Intraprostatic urine reflux may be important in the occurrence of various types of prostatitis. Recent studies have found that urate in urine not only stimulates the prostate, but can also precipitate into stones, block the gland ducts, and serve as a shelter for bacteria. These findings can illustrate that prostatitis syndrome is actually a common manifestation of multiple diseases, and the clinical manifestations are complex and changeable, which can cause various complications or relieve themselves.