শেষ আপডেট: আগস্ট 27, 2026

A varicocele is a collection of dilated veins around the testicle — varicose veins, in the same sense as those in the leg. It affects roughly 15 to 20% of men, causes nothing at all in most of them, and is found in a much higher proportion of men investigated for infertility.

Two things follow from that, and this article is mostly about holding both at once. It is the commonest correctable cause of male infertility — and it is also frequently found in men it is doing nothing to, which is why not every varicocele should be operated on.

Diagram of the normal pampiniform venous plexus draining the testicle
Normal drainage of the testicular veins.
Diagram of a varicocele showing abnormally dilated testicular veins
In a varicocele the veins are dilated and blood pools around the testicle.

Why it is almost always on the left

Two anatomical facts explain it. The left testicular vein joins the left renal vein at a right angle, a longer and less favourable route than on the right, where the vein drains obliquely straight into the main abdominal vein. And the small valves that should stop blood flowing backwards often fail, so blood pools.

That asymmetry is worth remembering, because it makes a right-sided varicocele unusual — and an isolated new one on the right is a reason to look further. See the red flags below.

How it presents

  1. Found during a fertility investigation, in a man with no symptoms at all. This is the commonest route to diagnosis. Pooled blood raises the temperature around the testicle — which needs to run cooler than the rest of the body to make sperm — and exposes it to oxidative stress and pressure.
  2. A dull ache or heaviness, typically worse at the end of a day spent standing, and relieved by lying down.
  3. Felt or seen by the man himself — the classic description is a bag of worms above the testicle.

Grading is by examination rather than by scan: Grade I is felt only when bearing down, Grade II is felt without, and Grade III is visible through the skin. Ultrasound confirms it, measures the veins and the size of each testicle, and detects backward flow.

Couple at a fertility consultation, the setting in which most varicoceles are discovered
Most varicoceles are found during a fertility investigation in a man with no symptoms.

When treatment is worth it — and when it is not

The earlier version of this article gave two indications. The list below is fuller, and includes the situation most often missed as well as the one most often over-treated.

Reasons to treat

Reasons not to

Semen analysis under the microscope, the test that determines whether a varicocele needs treating
The semen analysis, not the scan, is what decides whether a varicocele needs treating.

How it is treated, and what to expect

No medication corrects a varicocele — the dilated veins remain dilated whatever is taken by mouth, and supplements marketed for it do nothing to them. A venoactive drug of the kind used for leg varicose veins may ease the ache in someone avoiding surgery, on weak evidence; that is relief of a symptom rather than treatment of the condition, and it is discussed under can a varicocele be treated with tablets.

Honest expectations matter more here than technique. Semen parameters improve in a good proportion of appropriately selected men, but improvement is not the same as pregnancy, and neither is guaranteed. A varicocele can recur even after a technically sound operation. The recognised complications are fluid collecting around the testicle, recurrence, and — rarely — injury to the artery supplying it.

Judge the result at three months at the earliest, since sperm take about that long to be produced and mature — a test done sooner is still reporting on the situation before surgery. See how to read a semen analysis, and what the monthly chance of conception actually is.

Findings that need attention rather than a routine appointment

In an emergency in Thailand, call 1669.

ভ্যারিকোসিল সম্পর্কে প্রায়শ জিজ্ঞাসিত প্রশ্নাবলী

ভ্যারিকোসিল কি পুরুষত্বহীনতার কারণ?

It is the commonest correctable cause of male infertility, and it is found in a substantially higher proportion of men investigated for fertility than in the general population. Pooled blood raises scrotal temperature, which sperm production depends on being lower than body temperature, and exposes the testicle to oxidative stress and pressure. That said, many men with a varicocele are entirely fertile — its presence does not by itself explain a fertility problem.

আমার আল্ট্রাসাউন্ডে ভেরিকোসেল ধরা পড়েছে, কিন্তু ডাক্তার তা অনুভব করতে পারেননি। এটার কি অপারেশন করা উচিত?

No. Treating a varicocele detectable only on imaging is not supported, and it is the commonest reason men undergo this operation without benefit. Grading is done by examination; the scan confirms and measures rather than decides.

Mine is on the right side. Does that matter?

It is worth mentioning specifically. Varicoceles are overwhelmingly left-sided for anatomical reasons, so an isolated right-sided varicocele — particularly one that has appeared suddenly or does not empty when you lie flat — warrants imaging of the abdomen to exclude something pressing on the vein.

Will surgery guarantee a pregnancy?

No. Semen parameters improve in a good proportion of well-selected men — a palpable varicocele, an abnormal semen analysis, and a partner without a major fertility problem — but improved parameters are not the same as a pregnancy, and recurrence is possible. Allow at least three months before judging the result.

My teenage son has been told he has a varicocele. What now?

Most need only monitoring, but the testicles should be measured rather than simply examined. If the affected side is failing to grow in step with the other, that is a reason for a urological opinion, since growth can often be recovered with treatment and may not be later.

Is there a tablet for it?

Not one that corrects it. No medication or supplement makes dilated veins go away, so the options for the varicocele itself are surgery, embolisation, or leaving it alone — and leaving it alone is the right answer for a great many men. A venoactive drug may ease the ache in someone avoiding surgery, on weak evidence, which is a different question and is covered under can a varicocele be treated with tablets.

Arranging a consultation

Dr. Soarawee Weerasopone sees male fertility and andrology patients at ব্যাংকক হসপিটাল সদর দপ্তর and at Samitivej Sriracha Hospital in Chonburi on 088-022-1445. Bring any semen analysis reports with their dates, and any results your partner already has.

ব্যাংকক হসপিটাল টেলিমেডিসিন এমন রোগীদের জন্য উপলব্ধ যারা সশরীরে উপস্থিত হতে পারেন না, যার মধ্যে আন্তর্জাতিক রোগীরাও অন্তর্ভুক্ত — ইউরোলজি বিভাগে ইমেলের মাধ্যমে এটি অগ্রিম ব্যবস্থা করুন bhquro@bdms.co.th. সামিটিভেজ শ্রীরাচা শুধুমাত্র সরাসরি উপস্থিতির মাধ্যমেই সেবা দিয়ে থাকে। খরচের বিষয়ে অনুসন্ধানগুলোর উত্তর এই ওয়েবসাইটের মাধ্যমে দেওয়া হয় না, হাসপাতাল নিজেই দিয়ে থাকে।.

দাবি পরিত্যাগ This content is written and reviewed by Dr. Soarawee Weerasopone, a board-certified urologist at Bangkok Hospital Headquarters, and is intended for education only. It is not medical advice, diagnosis or a prescription for any individual, and no advice, diagnosis or prescription is given through personal messaging channels or social media. Dr. Soarawee operates no public social media account; any account offering private consultation in his name is fraudulent. In an emergency in Thailand, call 1669.

চিকিৎসাগতভাবে লিখিত এবং পর্যালোচিত: ডা. সোয়ারাওয়ে উইরাসোপোন (ডা. পম) — বোর্ড-সার্টিফাইড ইউরোলজিস্ট, ব্যাংকক হসপিটাল হেডকোয়ার্টার্স, ২০১৬ সাল থেকে ইউরোলজিক্যাল অনুশীলনে যুক্ত। ফেলোশিপ: রোবটিক সার্জারি, চাং গুং মেমোরিয়াল হসপিটাল, তাইওয়ান (২০১৯) · অবসভারশিপ: এন্ডোইউরোলজি, জেনতেনদো ইউনিভার্সিটি হসপিটাল, টোকিও (২০২২) · রিসার্চ স্কলার ও ক্লিনিক্যাল অবসভার, স্কট ডিপার্টমেন্ট অব ইউরোলজি, বেলোর কলেজ অব মেডিসিন, যুক্তরাষ্ট্র (২০২৫–২০২৬)।.

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Dr. Soarawee Weerasopone — Urologist Bangkok থেকে আরও আবিষ্কার করুন

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