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Doctor insights on: I Have A Bump Under My Armpit That Hurts

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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


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Have a bump under my armpit and i can feel it its like a bump type of pimple feeling and it hurts and it stings and its not visible theres no lump ?

 Have a bump under my armpit and i can feel it its like a bump type of pimple feeling and it hurts and it stings and its not visible theres no lump ?

Folliculitis: Inflammation and possible Infection of Hair Follicles. Very common problem because of frequent Shaving and use of Deodorant blocking the sweat glands. Avoid Deodorant. Try Antibiotic cream like neosporin. ...Read more

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I have this bump under my armpit and it started off small and now it's like 3x bigger and hurts I don't know if it's a spider bite or a boil ?

I have this bump under my armpit and it started off small and now it's like 3x bigger and hurts I don't know if it's a spider bite or a boil ?

Boil: More likely a boil as this area of the body can be prone to them and a spider would usually have a tough time getting to your arm pit. See a health provider to have it evaluated and possibly drained. ...Read more

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Feel small bump under left armpit. When i touch it it hurts. What could this be.

Feel small bump under left armpit.  When i touch it it hurts. What could this be.

Hidratenitis: Most likely you have a condition which is called hidratenitis. This usually resolves on its own, though some recommend discontinuing your antiperspirant to avoid further worsening of the symptoms. In some instances, it is severe enough to warrant antibiotic therapy, so i would recommend an evaluation with your physician if the symptoms do not resolve in a few days. ...Read more

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Recently felt a little bump in armpit, a little bit hurt when pressed, no excretion or anything. What could that be?

Recently felt a little bump in armpit, a little bit hurt when pressed, no excretion or anything. What could that be?

Probably benign: Small infections and cysts of the skin under the armpit are common and not a cause for alarm. However if it keeps growing or is deeper than the skin (does it move when you move the skin?) it may represent a lymph node, and should be evaluated. ...Read more

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My sister is 14 years old and she said it's a bump under her armpit that hurt really bad and she said she notice the bump yesterday?

My sister is 14 years old and she said it's a bump under her armpit that hurt really bad and she said she notice the bump yesterday?

Infected cyst: it could be a lymph node,on infected cyst,either oil cyst,ot sweating gland cyst. either way she needs to see a doctor,she might need antibiotic,and possible drainage. so please take het to her doctor,or urgent care facility. ...Read more

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Why do I keep getting huge bumps under my armpit that are like boils. They hurt really bad.

Why do I keep getting huge bumps under my armpit that are like boils. They hurt really bad.

Folliculitis: Could be infected hair follicles. I would be concerned about lymph nodes too. Please see a doctor as soon as possible. ...Read more

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Hello, I have a small bump in my armpit. No it doesn't hurt. It is red and it is like a small bump. I got it after shaving my armipt. Thank you.

I'm Guessing: The best way to be sure would be to see and feel this lump, but, it sounds like you scratched the skin open and you have either an inflamed lymph node or possibly an infected skin sweat gland. If this continues to bother you for more than 5-7 days, please see your doctor for evaluation. ...Read more

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I recently noticed large bumps under my nipples and armpits that hurt....I also have what appears to be bug bites all over me. Should i be worried?

I recently noticed large bumps under my nipples and armpits that hurt....I also have what appears to be bug bites all over me. Should i be worried?

Infection?: No need to worry, but a physician should be able to determine if these painful bumps or nodules are from an infection. If so, they would improve with antibiotics. Other causes could be insect bites. Either way, an evaluation will point you in the right direction for treatment and put your mind at ease. ...Read more

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I have a red bump on m armpit. It's hurts, and may be a bug bite. What can I do to treat this asap?

I have a red bump on m armpit. It's hurts, and may be a bug bite. What can I do to treat this asap?

It MIGHT be...: Turning into an abscess, which will need to be drained in order to clear it up. Better see a doctor just in case. ...Read more

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I have had small red bumps and some large bumps that arent red under my armpits (these hurt) and lower for about 3 1/2 weeks. What could this be?

Check with doctor: You may have hydradenitis which is a skin disease affects the epocrine sweat glands or sebacious glands such as under the arms and under the breasts use warm compresses and you mat need antibiotics if reccurs or persists see a dermatologist. ...Read more

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Got a very painful, bump/cyst-like thing in my armpit. Can see a bit of redness, less than size of dime. What could it be & how do I treat? Hurts!

Got a very painful, bump/cyst-like thing in my armpit. Can see a bit of redness, less than size of dime.  What could it be & how do I treat? Hurts!

Most common: cause for such lump in armpit is a plugges SEBACEOUS CYST. This may require opening and drainage by a surgeon (although most family physicians perfrom such surgery) In the meantime HOT WET PACKS (or lying back in a hot tub) may encourage opening and draining "on its own". Hope this helps! Dr Z ...Read more

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I have noticed a small pea-sized bump under the skin of my left armpit. I can move it around. It does not hurt. I've had it for over 6 months now.

I have noticed a small pea-sized bump under the skin of my left armpit.  I can move it around.  It does not hurt.  I've had it for over 6 months now.

Bump under skin: This could be a small lymph node even if not tender. Other options could be cyst or atheroma under the skin. Likely nothing problematic, but an exam with a physician can help sort out if you need further workup. ...Read more

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I have a big bump that hurts on my armpit, how do you know if its an ingrown hair?

Either way: Sounds like an infected sebaceous cyst/hidradenitis/ or abscess. Likely need antibiotics and excision. ...Read more