what does it mean when you have a big bump on your armpit?
42410
Armpit lumps may be caused by cysts, infection, or irritation due to shaving or antiperspirant use. However, these lumps may also indicate a serious underlying health condition. Seek medical attention if you have an armpit lump that gradually becomes enlarged, is or isn't painful, or doesn't go away.
492192
Armpit boils. A boil (also known as a furuncle) is caused by an infection of a hair follicle or oil gland. The infection, usually involving the bacterium Staphylococcus aureus, builds up in the follicle in the form of pus and dead skin.
1177746
Most bumps on the arms are caused by a condition called keratosis pilaris. There are other possible causes, too, ranging from inflammatory skin conditions to irritation, such as folliculitis.
101675
Sometimes deodorants or detergents can cause irritant contact dermatitis or allergic contact dermatitis. The armpit is also a common site for skin tags (acrochordons), which are small out-growths of skin that are harmless but sometimes not appealing to the person who has them.
882438
Pimples are bumps often formed from bacteria buildup in your pores or clogged sweat glands. Though common, pimples in sensitive areas — such as under your arms — may cause you concern. However, they're often nothing to worry about. Underarm pimples aren't unusual.
249653
If you've allowed your underarm hair to grow out, they may also be lurking underneath, causing irritation. Deodorants and sweat might further aggravate the skin, making ingrown hairs in your armpit more uncomfortable. ... You can have one or many ingrown hairs in your armpits.
1121438
Keratosis pilaris (ker-uh-TOE-sis pih-LAIR-is) is a common, harmless skin condition that causes dry, rough patches and tiny bumps, usually on the upper arms, thighs, cheeks or buttocks.
273380
Keratosis pilaris is a benign condition characterized by numerous small, rough, red, or tan bumps primarily around hair follicles on the upper arms, legs, buttocks, and sometimes cheeks. Keratosis pilaris creates a "goose bumps," "gooseflesh," or "chicken skin" appearance.
1244374
a raised itchy bump with a clear center. a red itchy bump with a dark center and lighter swollen surrounding area. small red bumps or welts in a zigzag pattern or a line. small red bumps surrounded by blisters or hives.
1157369
On your torso or neck Feels like: A soft, movable bump just under your skin that's not painful when touched. Could be: A lipoma, a benign tumor in the fat cells under the skin. Lipomas can pop up anywhere on the body, but they're seen most commonly on the torso and neck.
1126248
If your hair follicles get blocked in areas where you also have many oil and sweat glands, you may first notice them as pimple-like bumps on your skin. They may be in places where you normally don't have breakouts. Over time they can become painful or maybe get infected and turn into scars.
322874
If your armpits are itchy, it's likely caused by a non-cancerous condition such as poor hygiene, dermatitis, or an allergic reaction. In most situations, if cancer is behind the itch, there are other symptoms accompanying it. This can include swelling, redness, warmth, and skin changes like thickening and pitting.
1105470
A change in the look or feel of your skin, such as puckering or dimpling. A new lump, thickening or bumpy area in one breast or armpit that is different from the same area on the other side. Nipple discharge that's not milky. Bleeding from your nipple.
810594
A bump on your forehead, even if it's small and doesn't hurt, can still be cause for concern. Swelling under the skin (called a hematoma or “goose egg”) is usually a temporary symptom of head trauma.
734741
They're most commonly found on the chest, shoulders, and cheeks. Keratosis pilaris is a skin condition marked by an overgrowth of a protein called keratin. It causes small bumps around hair follicles on the body. Lipomas are collections of fatty tissue under the skin and are often painless.
19833
If you feel a bump around your earlobe or scalp, it is most likely a benign cyst and it will go away without treatment. Sometimes the cyst will get bigger, but it should still go away without treatment. You should see a doctor if the cyst gets large, causes you pain, or affects your hearing.
675689
Swelling or lumps around your collarbone or armpits can be caused by breast cancer that has spread to lymph nodes in those areas. The swelling may occur even before you can feel a lump in your breast, so if you have this symptom, be sure to see a doctor.