Armpit pain no lump


Sweating, daily deodorant applications, and shaving all take place in your armpit. It’s no surprise, then, that it can have health problems from time to time. An ingrown hair or a rash from a new lotion or deodorant might cause discomfort.

In certain circumstances, however, the discomfort is produced by a swollen lymph node as a result of combating an infection. Changes in breast tissue that occur during a woman’s menstrual cycle might also cause this.

There are numerous reasons of armpit or underarm pain. They range from minor annoyances to significant threats, and include:

  • Deodorant irritates the skin
  • Infections of the sweat glands
  • Injuries
  • Compression of the nerves Cancer

It’s possible that you’re just in agony. Other signs and symptoms include a rash or enlarged lymph nodes.

The axilla is the medical term for the armpit. Axillary pain is the name for the pain that occurs there. It may cause you to be concerned about breast cancer. However, this isn’t the most common cause of axillary discomfort.

What’s In the Armpit?

The armpit is a tricky place to deal with. It’s made up of a lot more parts than you might think.

You’ve got: on or near the surface:

Skin: Hair follicles, sweat glands, fat, connective tissue, and more are all found within the layers of the skin.

Nerves: The brachial plexus is a nerve-relay station located directly above the armpit. The median, ulnar, radial, and musculocutaneous nerves are among the major nerves that travel through it.

Sweat glands: Underarm odor is caused by the many sweat glands found in the armpit.

Blood vessels: Both veins and arteries pass through this area of the body.

Deeper structures include:

Lymph nodes: Each armpit contains between 20 to 40 axillary lymph nodes. Lymphatic vessels in the arm and breast, as well as parts of the neck, chest, and upper abdomen, drain into them.

Muscles: This region is made up of the teres major, latissimus dorsi, pectoralis major, and coracobrachialis muscles. The deltoid, triceps long head, and biceps are all close together.

Bones: The axilla is bordered by the upper ribs and the head of the humerus (arm’s top bone).

Armpit pain symptoms

Depending on the reason of your armpit pain, you may experience a variety of symptoms.

Rashes and other apparent signs are common in skin disorders such as irritated hair follicles or shingles.

Swelling in the arm or armpit can be caused by lymph node diseases. If other lymph nodes are damaged, you may also have pain or swelling in your belly or legs.

Changes in the shape and size of the breast might be signs of breast cancer. Changes in the look of the nipple and dimpling of the breast skin, known as peau d’orange, are also possible.

Causes of armpit pain

Your armpit pain could be a symptom of something little, or it could be an indication of something more serious.

Some of the most common causes of armpit pain include:

Muscle strain

Armpit discomfort can be caused by overuse or injury to many muscles in the chest and arms.

A large chest muscle that runs up into the shoulder is the pectoralis major. It can be hurt while participating in sports or lifting weights.

The coracobrachialis is an upper arm muscle that can be strained during activities such as baseball or tennis.

You may get discomfort in the armpit if you sprain any of these or other chest or upper arm muscles.

Lymph nodes swollen

The lymphatic system is a series of nodes and glands that run throughout your body. These nodes secrete a fluid that aids in the fight against infection.

On both sides of the body, there is a cluster of lymph nodes near the armpit, and if these expand, they can produce armpit pain.

Swollen lymph nodes can be caused by a variety of factors, including:

  • Cold or flu: If you have a cold or the flu, your lymph nodes may become swollen and sore.
  • Lymphedema: Lymphedema is caused by a blockage in a lymph node, which causes the fluid inside to build up. Swelling can be excruciatingly unpleasant.
  • The lymph nodes grow as a result of this. It’s caused by lymphadenitis, a type of infection of the lymphatic system.

Breast cancer

In its early stages, breast cancer is often painless, although it might cause swelling in your armpit, breast, or collarbone. Make an appointment with your doctor if you detect pain or a lump at these locations.

It’s possible that the source of your discomfort is a benign growth that’s nothing to be concerned about, but it’s always best to consult a doctor.

Contact dermatitis

Certain deodorants and laundry detergents have the potential to cause an allergic reaction in the armpits. Contact dermatitis, a type of rash, can result from this.

When you stop using things that cause your allergic reaction, your contact dermatitis will usually go away. Antihistamines and anti-itch creams, such as hydrocortisone cream, may assist to lessen the initial irritation.

Hidradenitis suppurativa

Hidradenitis suppurativa appears under your arms as acne. However, this is a more significant issue that might result in scarring. This ailment is most common in areas where the skin rubs together, such as the armpits.

Boils-like lumps on the skin caused by Hidradenitis suppurativa may discharge blood or pus. Antibiotics and anti-inflammatories are commonly used by doctors to treat the illness.


Another skin ailment that can cause armpit pain is shingles.

The varicella-zoster virus causes the infection. Shingles is characterized by a scaly, itchy rash that occurs on the back, chest, or under the arms. A burning or tingling feeling can also be caused by the infection.

Peripheral artery disease (PAD)

A constriction of the smaller arteries in the arms and legs is known as peripheral arterial disease (PAD). As a result, less oxygenated blood reaches your limbs’ muscles and tissue.

Muscles that are depleted of oxygen ache. You may get pain in your armpit if you have PAD in one or both arms.

Armpit pain diagnosis

Your physician will inspect your armpit and inquire about any other symptoms you are experiencing.

They’ll also want to know when the soreness in your armpits began. To aid in the diagnosis, they may examine your throat, ears, and skin.

A blood test and potentially a biopsy of tissue from a lymph node or, if present, a lump may be required if they suspect a lymph node condition or breast cancer. A complete blood count (CBC) and a test for markers specific to the suspected ailment may be included in the blood test.

Treatment for armpit pain

For the first few days, ice and rest are commonly used to treat a strained muscle. You can use heat to help promote circulation in the area as the discomfort goes away. Circulation can also be improved by light stretching.

Antiviral medications such as acyclovir (Zovirax), valacyclovir (Valtrex), and famciclovir (Famvir) can be used to treat shingles and keep symptoms under control.

Capsaicin cream or numbing medications such as lidocaine (AneCream, LMX 4, LMX 5, RectaSmoothe, RectiCare) may be required if the pain from shingles is too severe.

Antibiotics and acne-fighting medications are commonly used to treat hidradenitis suppurativa. Surgery may be necessary if the condition does not respond to medication.

Swollen lymph nodes are treated differently depending on the cause. Antibiotics are required for a bacterial infection, whereas a viral infection usually resolves on its own. A warm, damp cloth applied to the affected area of the armpit can sometimes help to relieve pain.


If the discomfort is a sign of breast cancer, surgery to remove the tumor or damaged lymph nodes, chemotherapy, or radiation may be used to treat the condition.

Prevention of armpit pain

There is no strategy to avoid breast cancer or lymphatic problems that has been demonstrated. Annual exams, on the other hand, can help you catch a disease early.

With a few measures, other causes of underarm pain may be avoided. Stretching and not pushing yourself beyond your abilities in the weight room, for example, can help you avoid a strained muscle.

Other, less significant skin issues, such as contact dermatitis, can be avoided by replacing deodorants, antiperspirants, or detergents that are irritating your skin.

In general, you should keep your skin clean in areas where oil, sweat, and debris might collect. Keep your armpits clean, and if you see a rash or other concern, visit a doctor right away.

When Should You See a Doctor?

If you have armpit pain, you should consult your doctor.

  • TheĀ painiĀ unbearable.
  • It restricts one’s daily activities
  • You’re experiencing other troubling signs and symptoms

Other alarming signs and symptoms include:

  • Sweats at night
  • A bump in the breast
  • Weight reduction that occurs unintentionally

It’s also critical to get medical attention right away if you have symptoms of an illness, such as:

  • Chills and fever
  • Redness
  • Drainage

Make an appointment even if your symptoms are minor but persistent.

Outlook for armpit pain

Armpit pain caused by a muscle strain may be able to heal on its own after a few days of resting your muscles. You should consult your doctor if you have any other symptoms, such as swelling or the presence of a lump.

If cancer is suspected, your doctor may refer you to a hematologist who specializes in lymph node diseases or a breast cancer specialist.

If you notice a rash or other indicators of skin problems under your arm, consult your doctor about treatment options or a dermatologist referral.

You could have a respiratory infection linked to your lymph nodes if you suspect a lymph node issue and have symptoms like fever or congestion.

Early treatment of any ailment, in most situations, leads to better outcomes. If the discomfort is due to a transitory muscle condition, a diagnosis might also help to reduce anxiety.

See a doctor right away if you have armpit pain that lasts more than a few days or if you have additional symptoms like swelling or a rash.


Armpit pain can be caused by a variety of factors. They include everything from minor skin irritation to autoimmune illnesses, heart disease, and cancer.

Diagnostic tests and treatment are determined by your symptoms and the findings or suspicions of your healthcare professional.

The majority of reasons of armpit pain are unavoidable. Irritation, allergies, and injuries can all be avoided by using mild products, soft clothing, and a pre-exercise warm-up.