What are the Causes of Underarm Pain?

· May 13, 2018
Your underarms are among the most sensitive areas of the human body. Pain in this area can arise from injury as well as other causes

Have you ever experienced underarm pain?

Considering that there are lots of blood vessels in this area as well as tendons and nerves, it’s not at all surprising that at some point you might experience discomfort in the region. In fact, your underarms are connected to certain muscles that can inflame the ganglia.

That’s why it’s important to identify the source of your discomfort and evaluate whether your pain interferes with movement of your arms. If so, you should see a doctor. In extreme cases where the lymph nodes are damaged, surgical intervention may be necessary.

Symptoms include:

  • Pain (which can be mild, moderate, or severe)
  • Burning sensation
  • Swelling
  • Numbness
  • The appearance of lumps.

Causes of underarm pain

1-A Pulled muscle

underarm pain
This type of injury typically is characterized by sudden and sharp pain in the region. It’s often experienced by people who lift weights or perform strenuous activities.

Muscle tension can cause weakness, stiffness, fatigue, and even burning in the affected area. To resolve it, treat inflammation and avoid further damaging any pulled or torn muscles.

  • The use of cold compresses for 20 minutes is recommended, or you can take anti-inflammatory medications.
  • Above all, however, you should rest for three to six weeks.

We recommend you read: What causes inflamed lymph nodes?

2-Axillary lymphadenitis

This condition occurs when your lymph nodes become inflamed. It typically happens below the neck, groin, and underarms. Some of the primary symptoms include:

  • Fever
  • Swelling
  • Pain when touched
  • Redness
  • Numbness
  • Area hot to the touch

Axillary lymphadentitis is due to an infection. Your doctor will take a blood test to determine the cause and a biopsy may be performed to rule out the possibility of cancer.

3-Heart attack or angina

Heart attack or angina
Angina is intense pain that occurs when there is not enough blood supplied to the heart. It can spread to other parts of your body, including your arms, shoulders, neck, back, and underarms. Meanwhile, you experience the following:

  • Fatigue
  • Dizziness
  • Nausea
  • Excessive sweating

If you notice pain in your chest and underarms, it’s best to seek immediate medical attention.

4-Hidradenitis suppurativa

Hidradenitis suppurativa is a chronic disease that’s characterized by the appearance of nodules, scars, or abscesses in the region where you have sweat glands. This means that it commonly appears in the underarm area.

The nodules create blockages beneath the skin that affect the hair follicles. Some of the risk factors include:

5-Breast cancer

Breast cancer
Just because breast cancer is one of the possible causes of pain under the arms doesn’t mean that it’s the only one – so don’t be alarmed! The goal is to prevent it.

This type of cancer starts when your body attacks the cells of the ducts that produce milk in the breast tissue. It can also originate in glandular tissues. If your lymph nodes are very inflamed, they can affect the underarm area. Some of the warning signs are:

  • An inverted nipple
  • A lump in the breast tissue
  • Redness and itching
  • Peeling skin around the nipple
  • A change in the size or shape of the breast

If you have any of the symptoms mentioned here, you should have a mammogram or biopsy as indicated by your doctor to identify the cause of your pain and determine if it’s breast cancer.

See also: Breast cancer: types, symptoms, and treatment

6-Acid reflux

In medical terms this is known as indigestion. After you eat, the acids in your stomach break down food.

In some cases, however, the muscles can weaken and gastric juices rise up into the esophagus, which causes burning in the chest that can spread to the underarm area.


Pain in the underarm region can also be triggered by stress. This means that there is no physiological cause for it, but your body is perceiving pain due to stress or prolonged anxiety.

People with anxiety become very worried and are constantly on edge, which causes physical discomfort.

In these cases, it’s a good idea to try to slow things down. If you notice that your pain appears during times of stress, this could be the cause.