What is this bump that just appeared on my head/neck about half an inch behind my earlobe?
538221
It's most likely to be a sebaceous cyst. It's nothing to worry about -- I get them from time to time. I sometimes get them in my earlobe. Squishing them can break them up but makes them last longer. In all but one case they went away by themselves, but sometimes it's months before they're gone.\n\nIt may also be an insect bite or even a very large, nasty pimple.\n\nSebaceous cysts most often arise from swollen hair follicles. Skin trauma can also induce a cyst to form. A sac of cells is created into which a protein called keratin is secreted.\n\nThese cysts are usually found on the face, neck, and trunk. They are usually slow-growing, painless, freely movable lumps beneath the skin. Occasionally, however, a cyst will become inflamed and tender.\n\nSymptoms...\n\n> Usually a nontender, small lump beneath the skin\n> Redness, tenderness, or increased temperature of the skin over the area may occur infection\n> Grayish-white, cheesy, foul-smelling material may drain from the cyst\n\nSigns and tests...\n\nIn most cases, your physician can diagnose a cyst based on its appearance. Occasionally, a biopsy may be needed to rule out other conditions with a similar appearance.\n\nTreatment...\n\nSebaceous cysts are not dangerous and can usually be ignored. At times, they may become inflamed and tender. Others may grow large and interfere with day-to-day life. In these cases, you can have them surgically removed in a physician's office. Alternatively, small inflamed cysts can be treated by injection of steroid medications.
1021661
I could be an ingrown hair,but if you think it spreading it is best to go see a doctor. don't want to scary you but it could be some can of skin cancer. see a doctor do not ignore it.
698766
If you're worried, obey your instincts and see a doctor.  \nIt could take longer than 3 weeks for a percussive bump to heal under the skin.
877290
Sounds like a Baker's cyst. These are common and usually not too serious.\nYou should still go see a doctor anyways.
407347
It could be several things, really. It could be an infected hair follicle, a wart, a really determined pimple, or many other things. Does it bleed? Does it itch? Is it painful when you leave it alone? \n\nDon't pick at it. See your dermatologist. Good luck. :)
902201
how big it is?do not touch it,just go see your doctor,it might be infected.
262127
It may be scar tissue that has formed there. I would demand that the doctor due an ultrasound or whatever it took to figure this out.You are your best advocate.
670814
It's a good possibility. Go get it checked out just to make sure. Good luck!
779228
Sounds like some kind of infection. Hope everything turns out ok.
230761
It sounds like an inflamed lymph node, nothing serious. Lymph nodes are the body's way of saying you have an infection somewhere near that area. Yes, go to the doctor.
1138477
I've had something that sounds like what you have a couple of times. It was on my outer labia and both times It ended up being an infected hair follicle. In my case, I could see an actual small hair sticking up near the middle of the bump with a little bit of white around it. First I wiped the area with a little bit of alcohol and a Q-tip to cleanse the area. Then I took a pair of tweezers and pulled the piece of hair out (pinching the skin up with my other hand). As soon as I pulled the piece of hair out, pus came out. I squeezed it gently (as it was painful) to get the pus out (until I saw a bit of blood, so I knew I had all the pus out). Then I took a Q-tip and a little alcohol and wiped the area to clean the spot and put a fresh pair of cotton undies on. I've heard of people getting ingrown hairs there as well, so it could be something a doctor might need to help you with if that's the case. If you think it might be a pimple, you might try putting warm wet compresses on the area. Don't squeeze though, as if you don't see any type of white head you could make it worse (it could be a boil).
1043019
it could be a bite or something. try treating it as a pimple but DON'T PICK IT IF YOU AREN'T SURE!!!! And if that doesnt work, or if it gets bigger, go to the emergency room. Which you might want to go ahead and consider. That happened to my dad and overnight, that "pimple" made half of his face swell up
762042
Probably a benign cyst and nothing to worry about, but its always wise to get these things checked out by a doctor :D
785980
Personally I would not of even talked about this. Something like that is a bit too personal. If it's bothering you that much wear a pad or put a cork up it.....whatever. And if it gets worse the next day, see your doctor.
660944
Depending on the size and shape of the "bump" it could be any number of things.  It could be something as harmless as an in-grown hair to cancer.  Any time you notice something on your body that is different for your "normal" appearance you should have it checked by a doctor.  Only by looking at it and possibly by taking a biopsy (a sample of what is inside it) can you ever be sure.  It is always better to be safe and find it is nothing than to do nothing and it be something.  Hope this helps.
1172006
probably an anlarged apple due to infection - anti biotics will sort it but you would need to see your Doc to get these and he/she will do a proper diagnosis
591037
that might not be what it is, consider your recent activity and look it up on symptoms on yahoo search or something. It could be a zit or something.