Know about Sharp Pain Under the Left Breast.

pain under left breast

Experiencing Sharp Pain Under Left Breast? Here’s Everything You Need To Know.

There can be many reasons behind experiencing  sharp pain under the left breast since that area is home to several vital body organs. The heart, stomach, large intestine, Spleen, and pancreas are all located under and around the left breastbone. The left kidney is another main organ that sits higher on the left side than on the right side. Your left lung and your left breast are also present in the area.

These body organs that are present under and around the left breast prove that various reasons can cause sharp pain under the left breast. These causes are sometimes simple and, other times, severe. So, here are all the causes that can cause this pain and everything you need to know about them to make sure that you’re not ignoring a severe problem.

Pain due to Heart and Chest

If caused by problems related to your heart and chest, this sharp pain under the left breast can have many reasons. Here are some of these reasons and symptoms caused by them to help you understand the pain under the left breast better.

  1. Heart Attack

heart attack- pain under the left breast

Your heart is located at the centre and left in your chest, and considering the staggering number of people who die due to diseases related to their heart, the first thought that anyone has at a sharp pain under the left breast is that it is a heart attack.

The common symptoms usually experienced when somebody has a heart attack are that they share tightness, squeezing or pressure in the chest. Still, in many situations, even these symptoms do not occur. Here are some warning signs of a heart attack that you should know about apart from the sharp pain:

  • Shortness of breath
  • Vomiting and nausea (generally in women)
  • Fatigue
  • Discomfort in the shoulder, arm, and jaw.

If you are experiencing these symptoms, you need to visit the doctor as soon as possible. You have a high chance of being recommended for surgery. It might be an Angioplasty or Coronary bypass surgery.

You can adopt a healthy diet and a physical exercise routine to prevent Heart attacks as they help prevent high cholesterol and blood pressure.

  1. Precordial Catch Syndrome

pain under the left breast

This condition is most common in older children and young adults. The nerves of your chest wall become irritated or pinched due to a chest injury, bad posture, or a growth spurt. Even though his condition mimics the symptoms of a heart attack, like a sharp pain under the left breast, it is usually a harmless condition and resolves on its own. Usually, this syndrome is outgrown by most people by their mid-20s.

The symptoms of this condition are as follows:

  • Sharp, stabbing pain generally on the left side of the chest.
  • The pain has a sudden onset and is short-lived (3 sec-3 min).
  • The pain intensifies with deep breathing.

When presented with this condition, your doctor will most likely suggest some pain relievers like Tylenol (Acetaminophen), but you can generally manage this problem by yourself. Relaxation techniques like imagining a serene, calm scene that helps lower your anxiety, improving your posture, or deep breathing, which can increase the pain at first but then helps, are things that you can do for self-care.

There can be many reasons, such as Pericarditis, Pleurisy, Costochondritis, or Chest Injuries behind the sharp pain under the left breast, which is related to the heart and the chest, but these are the most common of those.

Pain due to Digestive Causes

There can be many digestive causes that can cause this sharp pain under the left breast, and here are some of those explained in detail to help you understand them.

  1. Gastritis


Your stomach resides in the upper left region of the body. Your stomach lining might become irritated and inflamed due to infections, certain medications, chronic alcohol, or spicy food, and this irritation can cause sharp pain under the left breast.

The symptoms of Gastritis are as follows:

  • Indigestion
  • Vomiting and nausea
  • Fullness in the Abdomen
  • Pain in the upper left portion

You will probably be prescribed over-the-counter pain meds or prescription antacids to resolve the issue. You might be suggested antibiotics if these do not solve the problem meaning bacteria to be the root of your Gastritis. You should avoid alcohol and hard-to-digest or spicy food and try to eat small meals frequently. You can also add some herbs like myrrh, liquorice, or clove with permission from your doctor to your diet plan.

  1. Heartburn

heartburn- cause of pain under left breast

You might experience a burning sensation in your throat and upper chest when the digestive acids begin to erode the lining of your windpipe (oesophagus). This is Heartburn but is mainly mistaken for a heart attack due to the sharp pain under the left breast, which can sometimes be a symptom.

Other symptoms of Heartburn are as follows:

  • Burning, sharp pain
  • Tightness in the chest
  • The pain usually occurs after eating or lying down
  • A sour taste left in the mouth
  • A small number of stomach contents rise through the throat, referred to as regurgitation.

You will most probably be prescribed antacids or pain relievers by your doctor for Heartburn. You should avoid spicy or fatty foods, alcohol, carbonated drinks, caffeine, and garlic to help with Heartburn. You can also try elevating the head of the bed to reduce the oesophagus’ exposure to stomach acids while you are sleeping.

  1. Pancreatitis

An inflammation of your pancreas, which is tucked behind the stomach, caused by inappropriate activation of digestive enzymes while still in the pancreas can cause irritation and sharp pain under the left breast.

Here are other symptoms of Pancreatitis:

  • Pain in the upper abdominal region and pain that radiates around the back
  • Vomiting and nausea
  • Fever
  • Oily stools

Anti-nausea and pain medication can be beneficial for this condition, and you can prevent smoking, excessive alcohol use, and a fatty diet to help Pancreatitis.

Another cause that might cause sharp pain under the left breast is

  • Injuries to the Spleen

The Spleen, which sits on the left of the stomach, can cause irritation or sharp pain under the left breast when it is injured as it can be leaking blood into the abdominal cavity. Symptoms when your Spleen is injured involve some tenderness in the upper-left portion, dizziness, tight abdominal muscles, and a drop in blood pressure in case of internal bleeding. You will most probably have to undergo surgery to treat injury to the Spleen, so wearing a seatbelt while driving and protective equipment during contact sports is suggested.

  • Hiatal Hernia

This is a condition in which the upper part of the stomach pushes into the chest cavity through the diaphragm, causing digestive acid reflux into the oesophagus and sharp pain under the left breast.


Considering the vital body organs located under and around the left breast area, you must consult a medical professional if you experience any pain in the region. Most of the conditions that might be responsible for this sharp pain can be treated and controlled through medications and minor lifestyle adjustments.