Patient's question:
Recently, when urinating, there are always two streams of urine flowing from the urethral opening. I don't know what the reason is.Doctor's answer:
The first case involves certain diseases of the urinary and reproductive systems, such as urethritis, prostatitis, etc. In addition to a split stream, these conditions often accompany symptoms like frequent urination, urgency, and dysuria. The causative agents are typically bacteria, chlamydia, mycoplasma, trichomonas, fungi, etc. Under the invasion of pathogenic microorganisms, the affected tissues and organs develop inflammation. The secretion of the urethral mucosa or prostatic secretion increases, containing mucoprotein components. When the secretion reaches the external urethral orifice, the water evaporates, and the mucoprotein causes the external urethral orifice to adhere and close. During urination, if the closed external urethral orifice only partially opens under the impact of urine, the stream becomes thinner. When the closed orifice opens in a sieve-like pattern, the stream splits. When the external urethral orifice fully opens, the stream returns to normal.The second case involves the occurrence of a split stream after sexual arousal or sexual intercourse. The former is due to sexual arousal causing congestion in the genital organs and an increase in secretions from the urethral glands, while the latter is the result of residual semen in the urethra flowing out, with its mechanism being roughly the same as during inflammation.