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Doctor insights on: Why My Armpit Hurts During My Period

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I have a veiny swolen bump or knot, the size of a ping pong ball on both sides between my breast and armpits. It hurts &is worse during my periods.

I have a veiny swolen bump or knot, the size of a ping pong ball on both sides between my breast and armpits. It hurts &is worse during my periods.

Swollen lymph node: Should be examined and your will need abreast exam, ultrasound and treatment.-ASAP. I would also recommend a mammogram, due to the proximity to your breast. Please call for an appointment ASAP. ...Read more

Menstrual Cycle (Definition)

The menstrual cycle begins with the shedding of the uterine lining, resulting in bleeding from the vagina. A few weeks later, one ovary releases an egg and the uterine lining thickens in preparation for a potential pregnancy. Pregnancy can occur at this stage if sperm fertilizes the egg. If the egg is not fertilized, the egg will leave your body and ...Read more


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For about 5 or 6 years, every month before my period, my left armpit hurts. I told my gyno back then, and she was not concerned. 52, Is this ok??

For about 5 or 6 years, every month before my period, my left armpit hurts. I told my gyno back then, and she was not concerned. 52, Is this ok??

Yes: There is breast tissue called the axillary tail of Spence which extends into the arm pit and like any other breast tissue it responds to hormonal changes. As long as the tenderness resolves after your period it is nothing to be concerned about. ...Read more

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All of a sudden my left armpit hurts and feels kinda swollen, and im on my period. Is that normal?

All of a sudden my left armpit hurts and feels kinda swollen, and im on my period. Is that normal?

Fibrocystic breasts: You may have fibrocysts in your breasts. These increase prior to your period and shrink when your period starts. However, please see your gyn to make sure that that is all there is to it. ...Read more

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My boobs hurt from the side where the armpit is located and I have my period around this time what can it be?

My boobs hurt from the side where the armpit is located and I have my period around this time what can it be?

Glandular changes: It could be some early fibrocystic breast changes, but many women do have breast pain and tenderness right before their period. Each month your body is preparing to get pregnant and the hormonal changes cause breast pain as well. Try some tylenol (acetaminophen) or ibuprofen a couple times a day several days before your period. You may also benefit from a birth control pill. ...Read more

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Bumps on armpits hurt a lot. They seem to go away&come back. I epilate armpits Also 2nd month that I bleed dark blood 2 wks after my period is done.

Bumps on armpits hurt a lot. They seem to go away&come back. I epilate armpits Also 2nd month that I bleed dark blood 2 wks after my period is done.

Infection of Hair: FOLLICLES, called Folliculitis. It happens because of shaving, use of Anti perspirant and waxing. Try not to use Anti perspirant. It blocks the seat gland pores and cause infection. These can be recurrent problem.
When acutely infected they will resond to Antibiotic treatment some times it may need I&D. ...Read more

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Can the lymph nodes in your armpits hurt a few days before your period? I can't feel them but under my arms are a little sore. No visible difference

Can the lymph nodes in your armpits hurt a few days before your period? I can't feel them but under my arms are a little sore. No visible difference

More likely breast: Rather than lymph nodes, I suspect that you have a bit of "ectopic" breast tissue in your armpits. This is not terribly rare. Some women have breast tissue in the armpits. Just as the rest of your breast can get swollen and hurt before your period, so can this tissue. Best to see a doctor at this point in your cycle to be sure. ...Read more

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My armpit is in pain. I hav my ultrasoud breast nd axilliarry ol r nrmal. During my period the go away after the pain cme agen. I'm 30yrs old. Hav 2kids.

My armpit is in pain. I hav my ultrasoud breast nd axilliarry ol r nrmal. During my period the go away after the pain cme agen. I'm 30yrs old. Hav 2kids.

A suggestion: If you were in my office and exam unremarkable and you were amenable I would try some acupuncture. SP21., HT 1, HT7. or perhaps even LR1 and Sp1. in any event that it goes away with periods is reassuring from a Western perspective. ...Read more

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Why my armpits are swollen and hurts a week before I get my period?

Why my armpits are swollen and hurts a week before I get my period?

Breast tissue: Many women have breast tissue which extends to their axillary areas (tail of spence) and experience such discomfort. Use analgesics such as Ibuprofen for the pain. If these areas are enlarging or you are uncertain about them, check with your doctor. ...Read more

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Under my arm pit hurts, I'm on my period, there isn't a lump. I'm not sure what it is, help please?

Under my arm pit hurts, I'm on my period, there isn't a lump. I'm not sure what it is, help please?

Breast tissue: Breast tissue actually extends into the armpit so when you have your period and your breasts get tender, the tenderness can extend into the armpit ...Read more

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I have a big size lump under my right shoulder blade. At first it wasn't giving me any problems, now it is hard for me to lay on my back or on my right side because it hurts. I can barely raise my arm for a long period without it hurting.

I have a big size lump under my right shoulder blade. At first it wasn't giving me any problems, now it is hard for me to lay on my back or on my right side because it hurts. I can barely raise my arm for a long period without it hurting.

Go see ur FamilyDoc: Not much I can do online except to tell you to go see your Family Doc to get a diagnosis & appropriate treatment. Perhaps it's a sebaceous cyst that can be drained. Or maybe a lipoma that needs to be removed. I hope it's not a pus pocket. Regardless, given that it's affecting you, that means it's time for you to see in-person care. Good luck! ...Read more

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I am 17, and my breast tend to hurt a lot, the side of my arm pit hurts pretty badly as well. I am not on my period but it constantly hurts. Why?

I am 17, and my breast tend to hurt a lot, the side of my arm pit hurts pretty badly as well. I am not on my period but it constantly hurts. Why?

Hormones: You are still secreting large amounts of feamle hormones, which help breasrs enlarge- the discomfort is from expansion of the breast tissue. Try wearing gym bras for several weeks and avoid underwire bras for now. ...Read more

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Hello I have a lipoma in my breast it hurts after my period and if I streach my arm too much should I be worried or tell my dr? Thank you

Hello I have a lipoma in my breast it hurts after my period and if I streach my arm too much should I be worried or tell my dr? Thank you

Yes tell your MD: Lipomas usually will not cause pain, may be benign fibro-cystic disease, you should have an examination by your doctor, to make sure nothing serious, if need will order tests or refer you to a specialist ...Read more

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During fertile period of my cycle I get pain in left breast which comes and goes. It also radiates to my left arm and sometimes to right breast also.

During fertile period of my cycle I get pain in left breast which comes and goes. It also radiates to my left arm and sometimes to right breast also.

Breast pain: Breast pain has a wide list of causes. If it has a cyclic pattern then it could be due to hormonal fluctuations during the menstrual cycle. Fibrocystic breast tissue is one example of cyclic breast pain. Schedule a visit for an exam and your doctor can began the evaluation process. ...Read more

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I have a hard painless lump that's been under my right arm since my period ended at the beginning of month. Hasn't moved and breast hurt at times.

I have a hard painless lump that's been under my right arm since my period ended at the beginning of month. Hasn't moved and breast hurt at times.

Lump: Having a painless lump under your arm is a reason to visit your doctor to get it checked out. It could a lymph gland or cyst. It needs to get checked immediately. ...Read more

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Sore breasts, a sign of pregnancy? My period is another week in a half away. Above the nipple where the breast attach to the chest is really sore on my left breast. It also hurts by the arm pit and back of my arm to the shoulder. But my actual breast does

Sore breasts, a sign of pregnancy? My period is another week in a half away. Above the nipple where the breast attach to the chest is really sore on my left breast. It also hurts by the arm pit and back of my arm to the shoulder. But my actual breast does

Yes,: Yes, breast tenderness can be a sign of pregnancy. Please take a test and if it is negative, repeat the test in several days if you haven't gotten your period. Please be sure that your breast isn't red or has any abnormalities. If you breat pain continues, please be checked by your doctor to be sure your breast doesn't have any abnormalities. ...Read more

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What would cause pain and numbness of the left arm and leg, swelling of the left ankle and foot, during periods only?

What would cause pain and numbness of the left arm and leg, swelling of the left ankle and foot, during periods only?

Uncertain: This is something you should take your physician. The swelling in one leg or an ankle may be related to the venous return from the lower extremity. The pain and numbness in one arm and leg could suggest a neurologic system. This is why you should take this to your physician. ...Read more

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I"m on day 4 of period. I feel a very small lump in my left atm below my armpit. 4 mnths ago I felt it but it disappeared I think. What is cause?

I"m on day 4 of period. I feel a very small lump in my left atm below my armpit. 4 mnths ago I felt it but it disappeared I think. What is cause?

Lymph node: Probably has nothing to do with your period. Go see your doc to make sure nothing else is wrong. Probably it's an enlarged lymph node. There are many causes of this. ...Read more

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I was wondering is a lump in your armpit around your period normal?

Maybe...: Part of the breast extends into the armpit. Tender lumps in breast tissue are common around the time of your period. Most likely, this is a b-9 lump. However, any lump you find that is new should be investigated by your doctor to be sure. Best wishes! ...Read more

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How do I avoid painful lumps under my armpit before and after my period?

Hidradenitis: Hi!
i'm wondering if you may have a condition called hidradentitis in which the sweat glands become infected in the underarm and groin areas. This condition can be treated sometimes with topical antibiotics such as Cleocin (clindamycin phosphate) t. Laser can really improve the problem if antibiotics aren't working.
Dr brown. ...Read more

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For about 3months now, I've had boil in my armpit immediately after my period. What could this be? Thanks

Folliculitis: Folliculitis is a hair follicle infection most commonly caused by nicking yourself while shaving and then having the short hairs grow into the skin becoming infected. There are lymph node collection stations under the arm that can lead quickly into the venous channels. (blood) use a depilatory, wash the underarms with an antibacterial soap, and see a md if a large boil develops. ...Read more

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How can I eliminate bad armpit odor? It is strong before my period comes. Then is the same smelling. Thanks

Underarm Odor: Not many people know this, but perspiration by itself has no odor at all. Underarm odor is caused by bacteria and their excrement as they breakdown perspiration. Sweatblock is strong enough to keep you dry and specifically formulated to keep you comfortable by reducing irritation and itch. The unique sweatblock application method makes it even more effective. The product is sold at walmart. ...Read more

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I have a gland in my armpit that swells up a week before my period, as soon as I get my period it goes away. Should I be concerned?

Probably not: The mammary tissue extends well up into the axilla. That tissue will usually fluctuate with the changing hormones during your cycle. As you approach your period the estrogen levels increase and the breast tissue responds by becoming a bit fuller and more prominent - that is likely what you are noting. However, if you are concerned you should see your doctor for an exam. ...Read more

Axilla (Definition)

Area of human body directly under the joint where the shoulder connects to the arm. It contains axillary vessels, brachial nerve plexus, lymph nodes & vessels, axillary ...Read more


Dr. Linda Callaghan
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Menstrual Period (Definition)

Menstrual period is a medical term for the monthly bleeding ...Read more