Armpit lumps are very common and are normally caused by a swollen lymph node or gland under the armpit. However, there are many other causes for armpit lumps, some of which may require treatment. Fortunately, there are many treatments for lumps that appear under the arm, depending on what has caused them. A doctor can diagnose the underlying cause of an armpit lump and prescribe the proper treatment.
Causes
There could be a number of potential causes of armpit lumps. Most armpit lumps are harmless and the direct result of abnormal tissue growth. However, armpit lumps may indicate a much more serious underlying health issue. If this is the case, it will most likely require medical intervention. Some of the most common causes of armpit lumps include:
- noncancerous, fibrous tissue growth (fibroadenoma)
- cysts or fluid filled sacs
- allergic reactions to deodorant, antiperspirant, or soap
- viral or bacterial infections
- infections that drain into the lump in the armpit
- fatty growths (lipomas)
- adverse reactions to vaccinations
- fungal infections
- lupus
- breast cancer
- lymphoma
- leukemia
Symptoms
The most obvious symptom of an armpit lump is the lump itself. The lumps can range in size from very tiny to quite large. The texture of the armpit lump may vary according to what is causing it. For example, a cyst, infection or fatty growth may feel soft to the touch. However, fibroadenomas and cancerous tumors may feel hard and immobile. Some people may experience pain with an armpit lump. Painful lumps are often associated with infections and allergic reactions, which cause softer lumps. Lymph node infections may also cause painful lumps in the armpit.
Difference in men and women
Armpit lumps occur in both men and women of all ages and many of these are harmless. However, women should be particularly aware of armpit lumps as they may indicate breast cancer. Women should perform monthly breast self-exams and see a doctor for routine exams. If a woman finds a lump, she should report the lump to her doctor right away.
A man can generally wait to see a doctor unless they notice warning signs indicating the lump is serious. This is because men are far less likely to find a lump in the armpit that is due to breast cancer. However, although rare, men can also develop breast cancer.
How to tell if an armpit lump is serious
Any new or newly discovered lump on the body could cause concern. However, not all lumps are harmful or even painful. The seriousness of a lump can be best determined through medical examination and sometimes additional testing. Warning signs that may indicate a more serious armpit lump include:
- gradual enlargement
- no pain
- does not go away
If a person experiences or notices any of these symptoms, or has any doubts about the lump, they should see their doctor as soon as possible who can rule out more serious causes. Of course, any unusual lumps should be carefully evaluated.
When a person sees a doctor about an armpit lump, the doctor will generally start by asking them questions about the lump. The doctor may ask about any pain or discomfort the person is experiencing. In addition, the doctor will perform a physical examination. This examination should include a hand palpation or massage to determine the consistency and texture of the armpit lump. This procedure allows the doctor to thoroughly examine the lymph nodes.
