Unilateral Tubal Blockage: Causes, Symptoms & Treatment

by | May 11, 2023 | Fertility


Every woman’s reproductive system is an intricate web of wonders. One such wonder is the pair of fallopian tubes that act as a highway for eggs to travel from the ovaries to the uterus. But what happens when one of these highways gets blocked?


What is the Unilateral Tubal Blockage?

Unilateral Tubal Blockage

Unilateral Tubal Blockage

Unilateral tubal blockage refers to a situation where one of the fallopian tubes is blocked, preventing eggs from traveling freely. This might sound like an end to your fertility journey but don’t hit the brakes just yet. The truth is, it’s not all doom and gloom!


How Unilateral Tubal Blockage Affects Fertility

When it comes to fertility, the impact of unilateral tubal blockage is like a game of ping-pong. Your body has two paddles (fallopian tubes) and as long as one paddle works fine, the game continues. In the case of a blocked fallopian tube, your body, being the amazing entity it is, can often adapt and rely on the other, unblocked tube.


How Blockage Affects the Chances of Natural Conception

Imagine you’re trying to drive to your favorite restaurant, but one of the roads is closed. You’d naturally use another route, right? Similarly, if one fallopian tube is blocked, the other can step up to the plate and allow for conception to occur naturally. However, this does depend on the health and functionality of the remaining open tube. The journey might take longer and require more patience, but it is definitely possible.


The Role of the Other, Unblocked Fallopian Tube

Just like a team player stepping up when their teammate is down, the unblocked fallopian tube can compensate for its blocked counterpart. Eggs from both ovaries can be picked up by the open tube, effectively doubling its workload. It’s like your own personal superhero, ready to swoop in and save the day!


Causes of Unilateral Tubal Blockage:

Imagine the fallopian tubes as the Golden Gate Bridge, a pathway for life’s most precious cargo – the egg. But what if there’s a roadblock on one side of this bridge? That’s what happens when a woman faces unilateral tubal blockage. Now, let’s delve deeper into what causes this one-sided traffic jam.

  • Infections and Inflammation: Imagine a garden hose that gets a kink due to excessive use or misuse. Similarly, one of the most common causes of unilateral tubal blockage is pelvic inflammatory disease (PID), an infection that inflames the fallopian tubes, causing them to kink or twist. PID is often the result of sexually transmitted infections, like chlamydia or gonorrhea.
  • Endometriosis: The Silent Culprit: Think of endometriosis like weeds taking over your garden, growing in places they shouldn’t. When the tissue lining the uterus grows outside of it, often reaching the fallopian tubes, it can cause blockages. If this tissue growth is on one side, it can lead to unilateral tubal blockage, turning a fallopian tube from a bustling highway to a single-lane road.
  • Surgical Scars and Adhesions: Have you ever seen a road closed off because of construction? A similar situation can happen in our bodies. Surgical procedures in the pelvic area can result in scar tissue or adhesions, which can obstruct one of the fallopian tubes.
  • Congenital Abnormalities: Just as some bridges are built with a flaw, sometimes, a woman is born with a fallopian tube abnormality. These congenital issues can lead to a blockage in one of the tubes, a roadblock present from day one.
  • Ectopic Pregnancy: Think of an ectopic pregnancy as a car breaking down in the middle of the bridge. It’s not supposed to happen, but when it does, it can cause a blockage. An ectopic pregnancy occurs when a fertilized egg implants outside the uterus, usually in a fallopian tube. This can cause scarring and, consequently, a blockage.


Symptoms Of Unilateral Tubal Blockage:

  • The Invisible Symptoms: Firstly, it’s crucial to understand that much like a silent alarm, unilateral tubal blockage often doesn’t trigger any noticeable symptoms. It’s a bit like having a blocked pipe in the house that you don’t realize until there’s a water backup. You may not know you have a blockage until you encounter difficulties while trying to conceive.
  • Potential Trouble Getting Pregnant: So, what’s the equivalent of a water backup when it comes to unilateral tubal blockage? For many women, the first signal is difficulty getting pregnant. Imagine your fertility journey is like trying to catch a train. If the tracks (fallopian tubes) are clear, the train (egg) can reach its destination (uterus) smoothly. But if one track is blocked, it might take longer for the train to arrive, making it harder to catch.
  • Pain and Discomfort: If the blockage is caused by an underlying condition like endometriosis or an infection, you may experience some pain or discomfort. This can feel like a recurring stomach ache that just doesn’t seem to go away. It’s your body’s way of telling you that it’s time to call in a professional – much like you would call a plumber for that blocked pipe.
  • Abnormal Menstrual Cycles: Another signal could be changed in your menstrual cycle. Just as a traffic jam can disrupt your regular commuting routine, a tubal blockage can affect your regular menstrual cycle, leading to heavier or lighter periods.

It’s essential to remember that these symptoms can also be linked to various other conditions. So, if you notice any of these signals, don’t jump to conclusions. Instead, turn to a medical professional. They can help decode these signals, diagnose the issue, and guide you through the next steps.


Diagnosis of Unilateral Tubal Blockage:

  • Medical History and Physical Examination: Firstly, your doctor will take a detailed medical history and conduct a physical examination. This is like the detective’s preliminary investigation, collecting initial clues about the case. Your doctor will ask about any symptoms, your menstrual cycle, past surgeries, and your sexual history.
  • Imaging Tests: Next comes the imaging tests, the detective’s ‘magnifying glass’ for a closer look. This usually involves a hysterosalpingogram (HSG), a special kind of X-ray of your fallopian tubes and uterus. This test can help visualize any blockages, much like a traffic helicopter surveying a busy highway.
  • Laparoscopy: In some cases, if the clues are still not adding up, your doctor might recommend a laparoscopy. This is a minimally invasive surgical procedure that allows your doctor to view your fallopian tubes directly. Think of it as the detective finally visiting the crime scene.

Remember, diagnosis is a journey, and you are not alone. Your doctor is there with you, playing the detective, helping to find the answers. It’s normal to feel anxious, but remember, the goal of this detective mission is to help you find the best route forward.

So, while the process might seem overwhelming, with each test, you’re getting closer to the answers you need. Stay patient, stay hopeful, and remember, every step forward is a step closer to your goal.


Treatment For Unilateral Tubal Blockage:

Having a unilateral tubal blockage might feel like finding yourself at a dead-end on a long journey. But remember, a dead-end doesn’t mean the journey is over. There are detours and alternative routes to explore. Let’s look at some of the options for the treatment of blocked fallopian tube.

  • Medication: Think of medication as a friendly traffic officer, guiding the traffic and helping clear the blockage. If the blockage is due to an infection or inflammation, antibiotics or anti-inflammatory drugs might be the first course of action. This can help clear the blockage and restore the normal flow of traffic.
  • Surgery: If medication doesn’t work, surgical intervention could be the next step. Just like a roadwork crew fixing a blocked road, a surgeon can remove the blockage in your fallopian tube. There are different types of surgeries, including salpingostomy and fimbrioplasty, each aimed at restoring the normal function of your tube.
  • In Vitro Fertilization (IVF): Sometimes, despite best efforts, the blockage might not be removable. In such cases, IVF acts as the perfect detour. IVF bypasses the fallopian tubes entirely, fertilizing the egg outside the body and implanting it directly into the uterus. It’s like taking a helicopter ride over a traffic jam!


Risks Associated with Unilateral Tubal Blockage

Though the body has a knack for adapting to challenges, it doesn’t mean that a blocked fallopian tube comes without its risks. The most significant risk is an ectopic pregnancy. This is when a fertilized egg implants outside the uterus, typically in a fallopian tube, which can become a serious, life-threatening condition if not treated promptly.

Moreover, if the blockage is due to inflammation or infection, it may affect the overall health of the reproductive system, even potentially impacting the open tube. So, while our bodies are master adapters, it’s crucial to seek appropriate medical advice and treatment when dealing with a unilateral tubal blockage.

  • Pelvic Inflammatory Disease (PID): Pelvic Inflammatory Disease is a common cause of unilateral tubal blockage and a significant risk associated with it. It’s like the pothole on the road, damaging the fallopian tube and obstructing the passage for the egg. PID is usually a result of sexually transmitted infections, so regular screening and safe practices are crucial for prevention.
  • Septic Abortion: A septic abortion, an infection of the uterus following an abortion, is another risk factor. This is akin to an unexpected detour, causing further damage and potentially leading to a blockage in the fallopian tubes.
  • Exposure to In Utero Diethylstilbestrol (DES): Exposure to DES in utero is akin to encountering hazardous material on the road. This synthetic estrogen was once prescribed to prevent miscarriages, but it was found to increase the risk of tubal blockage in the daughters of women who took the drug.
  • Genital Tuberculosis (TB): Genital TB is another significant roadblock on this journey. Though less common in developed countries, it’s a significant risk factor in areas where TB is prevalent. It’s a silent offender that can cause severe damage to the fallopian tubes if not diagnosed and treated promptly.
  • Tubal Endometriosis: Tubal endometriosis is like a traffic jam on the road, where the lining of the uterus grows in other areas, including the fallopian tubes. This can lead to blockages, causing pain and fertility issues.
  • Ectopic Pregnancy: An ectopic pregnancy, where the fertilized egg implants outside the uterus, is a significant risk associated with tubal blockage. It’s like taking a wrong turn on your journey – the egg gets stuck in the blocked tube, leading to a potentially life-threatening situation that requires immediate medical attention.


Unilateral vs Bilateral Tubal Blockage:

Finally, it’s important to understand the difference between unilateral and bilateral tubal blockage. It’s like comparing a one-way street with a two-way street. With unilateral blockage, one fallopian tube is blocked, but the other is open, allowing for potential natural conception. But with bilateral blockage, both tubes are blocked, making natural conception much more challenging and often necessitating fertility treatments like IVF.



Unilateral tubal blockage is a condition that can have significant implications for a woman’s reproductive health. The causes are diverse, ranging from infections and surgeries to endometriosis and ectopic pregnancies. The symptoms can be subtle and often overlap with other conditions, making it a challenging diagnosis. That said, timely detection and treatment can greatly improve a woman’s chances of conceiving.

Treatment options are multifaceted, ranging from non-invasive to surgical procedures, each with its own set of benefits and drawbacks. It’s crucial for each woman to discuss these options thoroughly with her healthcare provider, considering factors such as her age, overall health, and family planning goals.



Q: What causes one fallopian tube to be blocked?

A: Several factors can cause a fallopian tube to become blocked, including:

  • Pelvic inflammatory disease (PID): An infection in the reproductive organs can lead to inflammation and scarring in the fallopian tubes.
  • Endometriosis: This condition causes the tissue lining the uterus to grow outside of it, potentially affecting the fallopian tubes.
  • Previous surgeries: Surgeries in the pelvic area, such as for ectopic pregnancy or appendicitis, can result in scar tissue formation.
  • Tubal ligation: This sterilization procedure involves blocking or sealing the fallopian tubes intentionally to prevent pregnancy.
  • Congenital abnormalities: Rarely, some women may have structural abnormalities in their fallopian tubes from birth.

Q: Can I get pregnant with one tube blocked?

A: Yes, it is still possible to conceive with one blocked fallopian tube. Pregnancy can occur if the egg released from the ovary on the side with the open tube is fertilized and travels through that tube to the uterus for implantation. However, having a blocked fallopian tube reduces the chances of conceiving naturally, especially if both tubes are blocked or if there are other fertility issues present.

Q: What if one side fallopian tube is blocked?

A: If only one fallopian tube is blocked, it is still possible to conceive naturally. The open tube allows the egg to be fertilized and transported to the uterus for implantation. However, the chances of conception may be lower compared to having both tubes open. If you are struggling to conceive or have concerns, it is advisable to consult with a healthcare professional to discuss potential options and treatments.

Q: How can I unblock my tubes naturally?

A: While some natural remedies are suggested to help improve fallopian tube health, there is limited scientific evidence to support their effectiveness in unblocking tubes. However, the following measures may contribute to overall reproductive health:

  • Maintaining a healthy lifestyle: Eating a balanced diet, exercising regularly, and managing stress levels can positively impact fertility.
  • Avoiding smoking and excessive alcohol consumption: These habits may have a negative effect on fertility and overall reproductive health.
  • Trying herbal remedies: Some herbs like dong quai and chaste berry are believed to support reproductive health, but their effectiveness in unblocking fallopian tubes is not proven.

Q: What is the best fertility treatment for one blocked fallopian tube?

A: The most suitable fertility treatment for one blocked fallopian tube depends on various factors, including the specific cause of the blockage, overall fertility health, and individual circumstances. Potential treatment options include:

  • Laparoscopic surgery: This minimally invasive procedure aims to remove blockages or repair the fallopian tube.
  • In vitro fertilization (IVF): By bypassing the fallopian tubes altogether, IVF can help achieve pregnancy even if one or both tubes are blocked.
  • Fertility medications: Depending on the underlying cause, certain medications may be prescribed to stimulate ovulation or address specific fertility issues.

Q: Can HSG open blocked tubes?

A: Hysterosalpingography (HSG) is a diagnostic procedure where a dye is injected into the uterus to assess the condition of the fallopian tubes. In some cases, the pressure from the dye or the flushing action during the procedure can clear minor blockages or remove debris, improving the patency of the tubes. However, HSG alone is not considered a treatment to reliably unblock fallopian tubes, especially if the blockage is significant or caused by severe scarring or structural abnormalities.

Q: Which fallopian tube is more important?

A: Both fallopian tubes are equally important for natural conception. Each month, one ovary releases an egg, and the fallopian tube on that side picks up the egg and provides the pathway for fertilization. If both tubes are open and healthy, the chance of conception increases. However, if one tube is blocked, the other open tube can still allow for pregnancy to occur.

Q: Does PCOS cause blocked fallopian tubes?

A: Polycystic ovary syndrome (PCOS) does not directly cause blocked fallopian tubes. PCOS is a hormonal disorder that affects ovulation and can lead to irregular menstrual cycles and difficulty conceiving. However, it does not typically cause blockages in the fallopian tubes. Blockages are usually caused by other factors, such as infections, scarring, or structural abnormalities.

Q: How can I increase my chances of pregnancy with one fallopian tube?

A: If you have one fallopian tube, you can increase your chances of pregnancy by:

  • Monitoring ovulation: Keep track of your menstrual cycles and identify the time of ovulation to maximize the chances of the egg being picked up by the open tube.
  • Maintaining a healthy lifestyle: Eat a balanced diet, exercise regularly, manage stress levels, and avoid smoking and excessive alcohol consumption.
  • Seeking medical advice: Consult with a healthcare professional who can assess your fertility health, provide guidance, and recommend appropriate treatments or interventions if needed.

Q: What is the best way to unblock fallopian tubes?

A: The most suitable method to unblock fallopian tubes depends on the cause and severity of the blockage. Options may include:

  1. Laparoscopic surgery: This minimally invasive procedure aims to remove blockages, repair damaged tubes, or address underlying issues like endometriosis or scar tissue.
  2. Tubal cannulation: In this procedure, a thin catheter is inserted into the fallopian tubes to clear blockages by gently pushing them open.
  3. In vitro fertilization (IVF): If both fallopian tubes are blocked or the blockage is severe, IVF can bypass the tubes altogether and assist with achieving pregnancy.

Q: Can fallopian tubes be unblocked on their own?

A: In some cases, mild blockages in the fallopian tubes can resolve on their own. Small obstructions or debris may be cleared naturally, allowing the tubes to function properly. However, significant blockages, scarring, or structural abnormalities are unlikely to resolve without medical intervention. It is advisable to consult with a healthcare professional to determine the best course of action based on your specific situation.

Q: How common is fallopian tube blockage?

A: Fallopian tube blockage is a relatively common cause of infertility. It is estimated that around 20-25% of infertility cases are due to tubal factors. The prevalence of blockage varies depending on factors such as age, underlying conditions, and reproductive health. It is important to undergo proper medical evaluation if you are experiencing difficulty conceiving to determine the cause and explore appropriate treatment options.

Q: Will I ovulate every month with one fallopian tube?

A: Yes, you can still ovulate every month even with one fallopian tube. Ovulation is the release of an egg from the ovary, and it typically occurs on a monthly basis in women with regular menstrual cycles. If you have one healthy fallopian tube, it can pick up the egg released from the ovary on its side and provide a pathway for fertilization. However, if both fallopian tubes are blocked or if there are other fertility issues present, ovulation alone may not guarantee successful conception.

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    Dr Mona Dahiya

    Dr Mona Dahiya

    IVF Specialist & Consultant

    Dr Mona Dahiya has performed over 10,000+ IVF cycles and is considered a global expert in IVF, ICSI, IUI and male fertility treatment. She is an eminent writer on Infertility Treatment and has over 100 Publications in both International and National Journals. Dr Mona Dahiya has immensely contributed to the field of infertility through her Research and articles.

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