What are the symptoms of an enlarged prostate? When to see a doctor, and which warning signs can't wait

Waking up two or three times in the middle of the night to use the restroom, standing in front of the urinal for several seconds before being able to urinate, and always feeling like you haven't fully emptied your bladder after urinating.
Have you been experiencing these situations for a while? Is it time to make an appointment to see a doctor?

For men over fifty experiencing these symptoms, benign prostatic hyperplasia (BPH, commonly known as an enlarged prostate) is one of the most common causes of the aforementioned symptoms, but it is not the only possible factor. This article will explain the common symptoms of BPH, when to seek medical attention, and the warning signs that cannot wait.

What are the common symptoms of an enlarged prostate?

There are two categories.

The first category is related to "storage": frequent urination, nocturia, sudden urgency, and urgency that is almost impossible to hold back. The other category is related to "voiding": having to wait a moment before urine comes out, a weak or slow urine stream, starting and stopping, dribbling at the end and being unable to finish cleanly, and still feeling a sense of residual urine after finishing.

The reason lies in the anatomical location.
The prostate is located at the bladder outlet, surrounding the urethra. When the prostate hyperplasia causes it to enlarge, the urethral outlet becomes narrower, leading to difficulty in urinating, and the bladder also becomes hypersensitive. These two types of symptoms often appear simultaneously.

Does having these symptoms definitely mean it is an enlarged prostate?

Not necessarily.

Overactive bladder, urinary tract infection, urethral stricture, polyuria caused by diabetes, the side effects of certain medications (for example, ingredients in some cold medicines can make urination suddenly difficult), and prostate cancer, which needs to be ruled out first, can all present with some of the same symptoms.

Symptoms are the initial status and are not necessarily the answer. Confirming the cause requires diagnostic test results, rather than self-diagnosing based on symptoms or self-medicating for a long time to suppress the symptoms.

When should you seek medical attention as soon as possible?

When symptoms affect your sleep or quality of life, it is worth visiting a clinic to seek an evaluation from a doctor.

Waking up two or three times at night to use the restroom, having to find a toilet first before going out during the day, being unable to sit through a meeting, or not daring to drink water during a long drive are not things that "you just have to tolerate as you get older."

Clinically, scales like the International Prostate Symptom Score (IPSS) assist in evaluating the severity. Doctors will use this during consultations; you do not need to calculate this score yourself at home beforehand.

Which warning signs cannot wait?

There are several situations that do not fall under the category of "wait and see."

When you cannot urinate at all (acute urinary retention), please go directly to a clinic or emergency room; this requires immediate treatment. If you experience hematuria (blood in urine) or fever combined with painful urination, please seek medical attention as soon as possible. If changes like edema in the lower limbs or body occur, which may be related to kidney function, please do not delay either.

What examinations will be done when seeking medical attention?

Starting with examinations that do not require specialized instruments, proceeding stage by stage: consultation and symptom assessment, urinalysis, ultrasound (to check prostate volume and post-void residual urine volume), uroflowmetry, and a PSA blood test to help rule out prostate cancer.
When further evaluation of treatment options is needed, an MRI may be scheduled to understand the prostate's volume, morphology, and vascular conditions.

What are the directions of treatment?

From lifestyle adjustments and medications to surgery and minimally invasive interventional therapy, options are arranged according to severity and individual conditions. It's not that you need surgery as soon as symptoms appear.

For mild cases, start by adjusting lifestyle habits such as limiting fluids before bedtime, caffeine, and alcohol. For those with obvious symptoms, there are two main classes of medications: those that relax the muscles of the bladder outlet, or those that reduce prostate volume; all of these treatments are prescribed and monitored by a doctor.
When medication efficacy is limited or symptoms are severe, there are transurethral surgeries, and there is also non-transurethral Prostate Artery Embolization (PAE), which uses microcatheters to embolize the blood vessels supplying the prostate through the artery, causing its volume to gradually shrink.

Which option is suitable needs to be determined based on evaluations by urologists and interventional radiologists, along with imaging conditions.
For a complete comparison of the two types of treatment, please see “How to Choose Treatment for Benign Prostatic Hyperplasia?”; to understand the procedure and eligibility for Prostate Artery Embolization itself, please see “What is Prostate Artery Embolization (PAE)?”; still hesitating about whether surgery is necessary? For the boundary of judgment, please see “Is Surgery Necessary for an Enlarged Prostate? When Can We Wait, and When Should Surgery Be Considered?”.

Want an evaluation?

If these symptoms have already affected your sleep or daily life, you can first undergo a preliminary evaluation via LINE to arrange a specialized men's health consultation. If you have past examination reports and medication lists, please bring them with you to the clinic to discuss with the doctor.

Healist Clinic is located at 2F-1, No. 40, Sec. 2, Heping E. Rd., Da’an Dist., Taipei City. It operates entirely by appointment, phone (02) 2366-0186.

Authoring Physician: Dr. Ping-Sheng Lu

Last Updated: August 9, 2026

Disclaimer: This article is for health education purposes and cannot replace medical diagnosis and treatment advice. Whether any treatment is suitable should be determined after evaluation by a physician.