Abdominal pain is one of the most common reasons people seek medical help. Left-side abdominal pain, in particular, can be a complex and perplexing condition. The left side of the abdomen houses several important organs, such as the stomach, large intestine (colon), pancreas, left kidney, and spleen. Pain in this area can arise from any of these organs or from problems related to the muscles, ligaments, or nerves surrounding them.
In traditional medicine, left-side abdominal pain is often diagnosed and treated through conventional methods such as medications and surgery. However, in recent years, acupuncture, an ancient therapy rooted in Traditional Oriental Medicine (TOM), has gained attention for its ability to treat various types of pain, including abdominal pain. Acupuncture, which involves inserting fine needles into specific points on the body to stimulate energy flow, is said to help relieve pain, reduce inflammation, and promote healing.
In this article, we will explore the causes of left-side abdominal pain, the role of acupuncture in treating it, and how this holistic therapy can provide lasting relief from the discomfort and underlying conditions causing pain.
Understanding Left-Side Abdominal Pain
Anatomy of the Left Abdomen
Before diving into the potential causes of left-side abdominal pain, it is important to understand the anatomy of the left side of the abdomen. The left abdomen is home to several vital organs:
- Stomach: Located on the left side, it can be a common source of pain due to issues like gastritis, ulcers, or indigestion.
- Spleen: Situated just below the ribcage on the left, it plays an important role in filtering blood and storing platelets. Conditions such as splenomegaly (enlarged spleen) or spleen rupture can lead to pain.
- Large Intestine (Colon): The descending colon and sigmoid colon are located on the left side, and problems such as constipation, diverticulitis, or colitis can cause localized pain.
- Kidney: The left kidney is located towards the back of the abdomen. Conditions such as kidney stones, infections, or kidney inflammation can cause sharp or cramping pain.
- Pancreas: The tail of the pancreas is located on the left side of the abdomen, and pancreatic disorders (e.g., pancreatitis) can cause pain radiating to the left side.
- Muscles and Ligaments: Abdominal muscles and ligaments that stretch across the abdomen can also be sources of pain, especially after injury, overuse, or strain.
Pain in the left abdomen can be localized, meaning it occurs in one specific area, or it can be diffuse, spreading throughout the entire left side. The severity, duration, and type of pain can provide important clues for identifying the underlying cause.

Causes of Left-Side Abdominal Pain
Left-side abdominal pain can be caused by a variety of conditions, ranging from mild issues to serious medical emergencies. Below are some of the most common causes of left-side abdominal pain.
1. Gastritis and Peptic Ulcers
Gastritis, an inflammation of the stomach lining, and peptic ulcers, which are open sores in the stomach or upper part of the small intestine, can cause pain in the left upper abdomen. The pain is often sharp, burning, or aching and may be aggravated by eating or lying down.
2. Splenomegaly (Enlarged Spleen)
The spleen filters blood and helps fight infection. An enlarged spleen can be caused by infections, liver diseases, or blood cancers. When the spleen becomes enlarged, it can lead to pain in the left upper abdomen, often described as a fullness or sharp discomfort, which can radiate to the left shoulder.
3. Diverticulitis
Diverticulitis occurs when small pouches (diverticula) in the colon become inflamed or infected. This condition typically causes pain in the lower left side of the abdomen, along with symptoms such as fever, nausea, and changes in bowel movements. In severe cases, diverticulitis can lead to abscesses or perforations, which may require urgent medical intervention.

4. Kidney Stones or Kidney Infections
Kidney stones are hard deposits that form in the kidneys and can cause severe pain when they move through the urinary tract. Left-sided kidney stones can lead to sharp, stabbing pain in the lower abdomen or back. Similarly, kidney infections (pyelonephritis) can cause pain in the left side of the abdomen, fever, and urinary symptoms.
5. Pancreatitis
Pancreatitis is the inflammation of the pancreas, a gland located behind the stomach. Left-sided pancreatitis can cause dull or sharp pain in the upper abdomen, which may radiate to the back. This pain is often worsened by eating and drinking and may be accompanied by nausea and vomiting.
6. Irritable Bowel Syndrome (IBS)
IBS is a common gastrointestinal disorder that affects the large intestine, leading to symptoms such as bloating, cramping, diarrhea, and constipation. IBS can cause intermittent left-sided abdominal pain, especially in the lower abdomen.
7. Hernia
An abdominal hernia occurs when an organ or tissue pushes through a weak spot in the abdominal wall. Left-sided hernias can cause localized pain, especially when coughing or lifting heavy objects. The pain may worsen after eating or with certain movements.
8. Ovarian Conditions (in Women)
In women, left-sided abdominal pain can be related to gynecological conditions such as ovarian cysts, endometriosis, or fibroids. Pain can occur in the lower left abdomen and may be cyclical, related to the menstrual cycle.
9. Musculoskeletal Pain
Overuse or injury to the muscles, ligaments, or joints in the abdominal area can lead to musculoskeletal pain. This type of pain is often localized and may be sharp, dull, or cramping in nature. It may worsen with certain movements, such as bending, twisting, or lifting.
10. Colitis
Inflammation of the colon, which can be caused by infection, autoimmune diseases (such as ulcerative colitis), or ischemia (reduced blood flow), can lead to pain and discomfort on the left side of the abdomen. Colitis may also be accompanied by diarrhea, fever, and bloody stools.

Symptoms That Accompany Left-Side Abdominal Pain
The symptoms associated with left-side abdominal pain depend on the underlying cause of the pain. Key symptoms to be aware of include:
- Nausea and Vomiting: These symptoms often occur with gastrointestinal issues, such as gastritis, pancreatitis, or infections.
- Fever: A fever may indicate infection or inflammation, such as in the case of diverticulitis or kidney infections.
- Changes in Bowel Movements: Diarrhea, constipation, or blood in the stool can indicate conditions like IBS, colitis, or diverticulitis.
- Bloating and Indigestion: These are common symptoms of gastrointestinal disorders like gastritis or IBS.
- Pain Radiating to the Back or Shoulder: Pain that moves to the back or shoulder can be a sign of pancreatitis or splenic problems.
- Urinary Symptoms: Painful urination, blood in the urine, or changes in urination patterns may point to kidney stones or kidney infections.
Acupuncture for Left-Side Abdominal Pain in Tokyo
Acupuncture, a therapeutic practice that involves inserting thin needles into specific points along the body’s meridians (energy pathways), has been used for thousands of years to treat a variety of conditions, including abdominal pain. In Traditional Oriental Medicine (TOM), abdominal pain is often linked to imbalances in the flow of energy, blood, and bodily fluids. These imbalances can arise due to factors such as stress, poor diet, environmental factors, and physical injury.
By targeting acupuncture points that correspond to the organs or systems involved in the pain, acupuncture aims to restore balance and improve the body’s natural healing abilities. For left-side abdominal pain, acupuncture can provide significant relief by addressing the root causes of the pain and promoting circulation, relaxation, and energy flow.

How Acupuncture Works for Left-Side Abdominal Pain
In Traditional Oriental Medicine (TOM), abdominal pain is often a result of imbalances in the flow of energy, blood, and bodily fluids. These imbalances can be triggered by stress, poor diet, infections, or injuries. Acupuncture aims to restore the free flow of energy and blood throughout the body by stimulating specific points along the meridians. These meridians are energy channels that connect various organs and systems. When energy becomes stagnant or deficient, it can lead to pain and discomfort in the affected area, such as the left side of the abdomen.
For left-side abdominal pain, acupuncture helps by targeting points associated with the organs in that area, including the stomach, spleen, pancreas, kidneys, colon, and muscles. By stimulating these points, acupuncture can help to:
- Reduce Inflammation: Acupuncture has been shown to reduce inflammation in the body, which can be beneficial for conditions like diverticulitis, gastrointestinal disorders, or kidney infections that cause left-side abdominal pain.
- Improve Circulation and Energy Flow: Acupuncture helps to improve circulation, ensuring that oxygen and nutrients reach the affected areas, promoting healing and reducing discomfort.
- Regulate Digestion: Acupuncture stimulates the digestive system and helps improve the function of organs like the stomach and intestines. For conditions like gastritis, constipation, or Irritable Bowel Syndrome (IBS) that cause pain on the left side, acupuncture can enhance digestion, relieve bloating, and reduce cramping.
- Relieve Muscle Tension: If left-side abdominal pain is related to muscle strain or injury, acupuncture can help release tension in the abdominal muscles and surrounding structures, alleviating discomfort and promoting relaxation.
- Balance Internal Organs: Acupuncture works to harmonize the function of the organs involved in abdominal pain. For example, by stimulating points on the meridians related to the kidneys or spleen, acupuncture can address kidney stones, infections, or spleen imbalances that might be causing left-sided pain.
- Enhance the Body’s Healing Response: Acupuncture activates the body’s natural healing mechanisms by promoting the release of endorphins, the body’s natural pain-relieving chemicals, which can significantly reduce pain and promote a sense of well-being.
Key Acupuncture Points for Left-Side Abdominal Pain
Several acupuncture points are specifically useful for treating left-sided abdominal pain. These points target various organs, improve digestion, reduce inflammation, and promote relaxation:
- Stomach 36 (ST 36) – Zusanli
- Location: Four finger-widths below the kneecap, along the outer edge of the shinbone.
- Function: ST 36 is one of the most commonly used points for gastrointestinal disorders. It helps tonify the digestive system, improve energy, and regulate the stomach, intestines, and spleen. This point is helpful for addressing conditions like IBS, gastritis, and constipation, which can contribute to left-side abdominal pain.
- Spleen 6 (SP 6) – Sanyinjiao
- Location: About three finger-widths above the inner ankle, along the medial side of the tibia.
- Function: SP 6 is used to balance the spleen and digestive system. It helps address conditions like bloating, indigestion, and abdominal pain. This point is particularly effective for treating pain on the left side of the abdomen, especially when it’s related to digestive disturbances.
- Large Intestine 4 (LI 4) – Hegu
- Location: Between the thumb and index finger, in the webbing of the hand.
- Function: LI 4 is a powerful point for relieving pain, reducing inflammation, and promoting overall energy circulation. It is commonly used to treat digestive conditions and abdominal pain, especially when the pain is associated with issues in the intestines or colon.
- Kidney 3 (KD 3) – Taixi
- Location: In the depression between the medial malleolus (inside ankle) and the Achilles tendon.
- Function: KD 3 is used to strengthen the kidneys, improve fluid metabolism, and treat lower abdominal pain that may be related to kidney issues or urinary problems, such as kidney stones or infections.
- Gallbladder 34 (GB 34) – Yanglingquan
- Location: Just below the knee, on the outer side of the lower leg.
- Function: GB 34 is a key point for treating pain and inflammation in the liver, gallbladder, and digestive systems. It is especially useful for conditions like gallstones, pancreatitis, and liver energy stagnation, which may cause left-sided pain.
- Conception Vessel 12 (CV 12) – Zhongwan
- Location: On the midline of the abdomen, about four finger-widths above the navel.
- Function: CV 12 is a central point for treating abdominal pain, nausea, and digestive discomfort. It regulates the stomach and spleen and is often used for digestive disorders such as gastritis, acid reflux, or indigestion.
- Bladder 20 (BL 20) – Pishu
- Location: On the back, about two finger-widths from the spine at the level of the 11th thoracic vertebra.
- Function: BL 20 is used to strengthen the spleen and regulate the digestive system. It is particularly useful for conditions that cause abdominal bloating, indigestion, or left-side pain due to spleen energy deficiency.
The Benefits of Acupuncture for Left-Side Abdominal Pain
Acupuncture offers several key benefits for individuals experiencing left-side abdominal pain, including:
- Natural Pain Relief: One of the primary benefits of acupuncture is its ability to relieve pain without the need for pharmaceuticals. It stimulates the body’s natural pain-relieving mechanisms, providing lasting relief without the side effects of painkillers.
- Personalized Treatment: Acupuncture treatment is highly individualized. A skilled acupuncturist will assess the root cause of the abdominal pain and tailor the treatment to address your unique symptoms and imbalances.
- Holistic Approach: Acupuncture treats the whole person, not just the symptoms. It considers the physical, emotional, and lifestyle factors that may contribute to abdominal pain, offering a comprehensive solution that promotes overall health and well-being.
- Non-Invasive: Unlike surgery or other invasive procedures, acupuncture is a non-invasive therapy that involves no downtime, allowing you to receive treatment and continue with your daily life.
- Promotes Digestive Health: Acupuncture is known to regulate digestive function, improving motility and reducing bloating, constipation, and indigestion that can cause abdominal pain. It also helps to restore the balance between the organs, ensuring proper digestion and nutrient absorption.
- Stress Relief: Stress is a common contributor to abdominal pain, especially in conditions like IBS or gastritis. Acupuncture promotes relaxation and helps manage stress, which can be a key factor in alleviating left-side abdominal discomfort.
- Long-Term Relief: While acupuncture can provide immediate relief from pain, it also addresses underlying imbalances in the body, offering long-term benefits for digestive health and overall well-being.
Conclusion
Left-side abdominal pain can arise from a variety of causes, ranging from gastrointestinal issues to kidney stones or musculoskeletal pain. In many cases, acupuncture offers an effective, holistic treatment option by addressing the root cause of the pain, promoting energy flow, and restoring balance within the body. By targeting specific acupuncture points, this ancient therapy can alleviate discomfort, reduce inflammation, improve digestion, and support the body’s natural healing processes.
Whether you are experiencing mild discomfort or chronic abdominal pain, acupuncture can be a valuable complement to conventional medical treatments, offering relief without the side effects often associated with pharmaceuticals. By working with a licensed acupuncturist who can assess your specific condition and develop a personalized treatment plan, you can take a proactive approach to managing and alleviating left-side abdominal pain.

At Fuji Wellness, we understand how disruptive abdominal pain can be, affecting your daily life and well-being. Our expert acupuncturists specialize in treating abdominal discomfort through carefully tailored acupuncture treatments that target the root cause of your pain. By restoring balance to your body’s energy flow, we can help alleviate symptoms such as bloating, cramping, and digestive issues. Experience the calming and therapeutic benefits of acupuncture in a serene, tranquil setting right here in Tokyo. Allow us to guide you back to a pain-free, vibrant life, naturally and with care. Your journey to relief starts with a single step at Fuji Wellness.
Fuji Wellness:
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