Can A Shoulder Injury Cause Pain In The Armpit?
Yes, a shoulder injury can cause radiating pain in the armpit. The pain usually occurs when inflammation or nerve irritation from the shoulder spreads into the nearby armpit area. In some cases, injured muscles and connective tissues may also cause radiating pain, which makes the armpit feel sore, tight, or tender to the touch.
If you suspect your underarm pain is due to a shoulder injury, Total Orthopedics and Sports Medicine can help. Our specialists perform detailed physical exams to rule out issues such as swollen lymph nodes. We also provide same-day X-rays or MRIs to identify the cause of armpit pain accurately. To relieve discomfort, our team offers joint injections, PRP therapy, and rehabilitation programs tailored to your specific condition. Call 855-321-6784 now for expert consultation.
Which Shoulder Injuries Can Cause Armpit Pain?
Conditions such as rotator cuff tears, shoulder impingement syndrome, bursitis, tendinitis, and muscle overuse can contribute to armpit pain. Other possible causes include shoulder dislocation or subluxation, thoracic outlet syndrome, and post-surgical inflammation around the joint. In rare cases, shoulder tumors or systemic inflammatory conditions like rheumatoid arthritis can also cause armpit discomfort.
These shoulder injuries can cause armpit pain because the nerves, muscles, and connective tissues that pass through the shoulder also extend into the axillary region. When inflammation, swelling, or mechanical stress develops within the shoulder joint, it can easily spread to these nearby structures, which produces tenderness or a pulling sensation under the arm.
Furthermore, the axillary nerve, which supplies sensation to the outer shoulder and upper arm, is especially sensitive to irritation during shoulder injuries. Compression or stretching of this nerve can cause radiating pain and numbness that reaches the armpit. Similarly, inflammation in the torn rotator cuff tendons or bursae can increase internal shoulder pressure, further worsening axillary pain.
Is Armpit Pain a Sign of Shoulder Nerve Entrapment?
Yes, shoulder armpit pain can be a sign of nerve entrapment, involving the axillary nerve. When nerves around the shoulder joint get compressed, they disrupt normal blood flow and cause inflammation. Over time, this irritation leads to persistent discomfort, numbness, and a dull pain in the armpit region.
In addition, you may also notice reduced shoulder strength when lifting your arm outward, as the deltoid muscle loses proper nerve support due to entrapment. Some of the most common causes of nerve entrapment include repetitive overhead motions, poor posture, or direct injury to the shoulder joint. In severe cases, bone spurs, scar tissue, or swelling from autoimmune or arterial disease can further irritate the nerves and cause armpit pain.
Can a Pectoralis Muscle Strain Cause Pain in the Armpit Area?
Yes, a pectoralis muscle strain can lead to pain in the armpit area. Since this muscle extends from the chest wall to the shoulder, any strain or tear can cause radiating pain in front of the armpit. According to PubMed, tight pectoral muscles also irritate the brachial plexus nerves, which contribute to other symptoms, such as:
- Numbness and tingling
- Poor grip strength
- Swelling or bruising
- Reduced mobility
How Does a Torn Labrum Contribute to Armpit Pain?
A tear in the labrum may cause irregular joint movement within the shoulder socket, which strains surrounding muscles and connective tissues, contributing to armpit pain. The resulting instability can also cause nerve damage, leading to tingling, burning, or numbness. You may also experience sensations of catching or grinding in the shoulder, with symptoms worsening during overhead movements.
Since a torn labrum can resemble rotator cuff tears, arthritis, and tendinitis, a detailed physical examination and imaging tests are necessary for an accurate diagnosis. At Total Orthopedics and Sports Medicine, we review your medical history, assess shoulder function, and order same-day imaging to confirm the injury. To treat a torn labrum, our doctors begin with conservative treatment options. If it fails to provide relief, we perform minimally invasive surgeries to repair the damaged tissue. Call 855-321-6784 now to book your appointment.
Can Shoulder Subluxation Cause Aching or Pulling in the Armpit?
Yes, shoulder subluxation can cause aching or pulling in the armpit area. According to Physiopedia, subluxation occurs when the upper arm bone partially slips out of the shoulder socket and leads to joint instability due to a weak rotator cuff or loose ligaments. This irregular movement stretches nearby muscles, connective tissues, and nerves, often causing discomfort that radiates into the armpit region.
In many cases, the surrounding muscles and tendons overwork to stabilize the unstable joint. The constant effort places extra strain on the tissues, which results in inflammation, tightness, and a persistent pulling sensation that spreads into the underarm. However, discomfort alone does not always signal a subluxation. You may also notice a popping or shifting sensation in the shoulder, especially during lifting or overhead movements.
How Does Shoulder Alignment Lead to Armpit Discomfort?
Poor shoulder alignment can cause armpit discomfort by compressing nerves and blood vessels, which is often associated with thoracic outlet syndrome. This compression leads to pain, numbness, or tingling that radiates into the armpit. Misaligned shoulders also disturb normal shoulder blade movement, which increases muscle tension and contributes to ongoing armpit pain.
To fix shoulder misalignment, orthopedic specialists usually recommend:
- Postural correction therapy
- Stretching programs
- Ergonomic modifications
- Strengthening exercises
What’s the Difference Between Shoulder-Origin and Lymph-Origin Armpit Pain?
Shoulder-origin armpit pain develops when muscles, tendons, or nerves around the shoulder joint become strained or irritated. In contrast, lymph-origin armpit pain arises from inflamed or swollen lymph nodes. Shoulder pain is usually accompanied by stiffness and reduced range of motion, while lymph nodes may cause swelling, warmth, or tenderness under the skin.
Additionally, shoulder-related pain typically results from musculoskeletal injuries such as a rotator cuff strain or a labral tear. On the other hand, lymph-origin armpit pain is often associated with underlying conditions, such as skin infections (e.g., boils) or autoimmune diseases.
Are Shoulder Stretches Effective in Reducing Armpit Discomfort?
Yes, stretching can be effective in reducing armpit discomfort, especially when you are experiencing pain due to pulled muscles or restricted connective tissues around the shoulder joint. Gentle stretches improve blood flow, reduce muscle tension, and restore the shoulder’s natural range of motion.
However, stretching alone may not be effective and could worsen symptoms if right armpit pain originates from a severe condition, such as a rotator cuff tear. Therefore, it is essential to get a proper diagnosis before starting any exercise program.
Can Chiropractic Adjustments Help Ease Armpit Pain?
Yes, chiropractic adjustments can help relieve armpit pain when it results from nerve compression, muscle tension, or misalignment in the neck, spine, or shoulder. These adjustments improve joint mobility, reduce inflammation, and ease nerve pressure. They also focus on maintaining posture, which helps prevent recurring strain and discomfort.
In addition to pain relief, chiropractic care enhances blood flow and promotes better muscle coordination throughout the shoulder and upper back. Regular chiropractic sessions can also help reduce muscle tightness and support overall joint alignment, which allows the shoulder to move freely. Here are some common examples of chiropractic techniques used to relieve armpit pain:
- Spinal adjustments
- Soft tissue therapy
- Myofascial release
- Trigger point therapy
- Neuromuscular re-education
How Can Shockwave Therapy Relieve Armpit Pain?
Shockwave therapy uses high-energy, controlled sound waves to stimulate the body’s natural healing process. These waves improve blood flow, promote tissue repair, and help break down calcifications that may form in tight or injured shoulder muscles. As a result, inflammation and nerve sensitivity decrease, which leads to reduced pain and improved shoulder mobility, especially in shoulder tendinopathies. According to the Archives of Rehabilitation Research and Clinical Translation, many orthopedic doctors use shockwave therapy in combination with dry needling to enhance tissue healing and improve pain relief outcomes.
Get Relief From Shoulder and Armpit Pain — Schedule Your Visit at Total Orthopedics & Sports Medicine Today!
Shoulder-related armpit pain can make it difficult to perform even the simplest tasks, such as getting dressed or carrying groceries. While mild discomfort may ease with rest, persistent pain could signal a severe issue. If the pain doesn’t improve with basic care or medication, you must consult an orthopedic specialist for comprehensive treatment.
At Total Orthopedics and Sports Medicine, we provide advanced diagnostics, pain management, and surgical care under one roof to prevent permanent joint damage. Our goal is to identify the cause of your pain, relieve discomfort, and restore shoulder function, allowing you to return to your normal activities. Contact us today or visit our clinic at 16 East 29th Street, Bayonne, NJ, to consult with our shoulder experts.
FAQs
Can Thoracic Outlet Syndrome Lead to Armpit Pain?
Yes, thoracic outlet syndrome (TOS) can lead to armpit pain. It occurs when nerves or blood vessels between the collarbone and the first rib get compressed. The pinched nerves cause pain, tingling, or numbness that radiates into the armpit and arm. Over time, poor posture or repetitive overhead movements can worsen these symptoms.
Is Armpit Pain Normal After Shoulder Surgery?
Yes, it is normal to feel pain in the armpit after shoulder surgery, if it is mild. It usually results from swelling, tissue irritation, or nerve sensitivity near the surgical site. However, the pain should gradually improve within a few weeks. If the pain worsens or spreads down the arm, consult your orthopedic specialist to rule out infection or nerve-related issues.
Can Shoulder Inflammation Cause Swelling or Tightness in the Armpit?
Yes, shoulder inflammation can cause swelling or tightness in the armpit area. When tendons or muscles around the shoulder joint become inflamed, fluid buildup and tissue tension may extend into nearby axillary regions. This inflammation often results from overuse or injury. To address it, you can perform gentle mobility exercises and take anti-inflammatory medications as recommended by your doctor.
How Long Does Armpit Pain from a Shoulder Injury Usually Last?
Armpit pain from a shoulder injury typically lasts two to six weeks, depending on its severity. Mild strains typically improve quickly with rest and gentle exercises, whereas severe injuries, such as rotator cuff tears or nerve irritation, may take longer to heal. Recovery also depends on factors such as your age, overall health, treatment consistency, and the rehabilitation timeline.
Can Sleeping on the Injured Shoulder Make Armpit Pain Worse?
Yes, sleeping on the injured shoulder can worsen the armpit pain. This position compresses nerves, muscles, and blood vessels, increasing pressure and inflammation. It can also slow healing by reducing blood flow to the shoulders. To prevent discomfort, try sleeping on your opposite side or use a supportive pillow to keep your shoulder aligned and relaxed.
Should I Use Heat or Ice if My Shoulder Injury Causes Armpit Pain?
Yes, both heat and ice can be beneficial for armpit pain, but they work best at different stages of recovery. For example, applying ice helps minimize swelling and inflammation in the first 48 hours. Once the initial inflammation improves, you can switch to heat therapy to relax tense muscles and enhance blood circulation.
Can Lifting Weights Cause Armpit Pain Due to Shoulder Overuse?
Yes, lifting weights can cause armpit pain due to overuse of the shoulder muscles. Repetitive or heavy lifting strains the pectoralis and rotator cuff muscles, which causes inflammation and tightness near the armpit. The risk of strain increases when you lift weights with improper form or without a warm-up. Taking adequate rest, performing gentle stretches, and gradually increasing load help prevent overuse injuries and ease discomfort.
Can Axillary Web Syndrome Cause Limited Arm Movement?
Yes, axillary web syndrome (AWS) can cause limited mobility in the arm. It usually occurs after lymph node removal or breast cancer surgery. AWS causes tight, cord-like bands under the skin of the armpit and upper arm, which makes shoulder movement painful or stiff. Stretching exercises can help release these cords to improve flexibility and reduce discomfort.
