discolored armpit with brown skin?
338116
birthmark? scar? talk to your doctor.
456612
You should go to your doctor, you could have a variety of skin conditions.
849647
I've heard of splothes in your armpit area, which is due to the irritation of shaving and the chemicals in deodorant or anti perspirant.  Could allergies to your laundry detergent be causing irritation?
183196
lotion with bronzer in it will make it seem like your skin is really darker than it is, so when the bronze washes away (approx. 5 days) you'll be like wow, wheres my good tan? Hopefully you put on a tanning sticker so you can see when your tan begins fading back to your skin color :)
335614
Interesting.  It is possible that the sweat glands or the left armpit are obstructed, but it is unlikely that this could occur in an entire area of skin.  It is possible to be born without sweat glands in a particular patch of skin or throughout their entire body.  The condition is called Anhidrotic Ectodermal Dysplasia
919208
Go see a dermatologist hon.
275349
maybe see a dermatologist, you might have some idiosyncrasies with regards to your underarm
1020162
It could very easily be contact dermatitis.  Is it in a place where the area is iritated by your waistband, underwear, or belt?  Are you allergic to nickel, or other metals?  Have you changed your, soap, body lotion, or detergents?\n\nAnother possibility is a childhood condition called Miliaria rubra, but more commonly referred to as "prickly heat," that some adults may suffer from.  In this condition, the sweat ducts become clogged.  This is a quotation from DrGreene.com: "....the pores of the sweat glands get plugged, resulting in tiny pink bumps or even water blisters. These bumps tend to show up on covered parts of the skin, especially where there is friction from clothing. The forehead (under caps or visors), body folds, the upper back and chest, and the arms are the most common locations. Prickly heat is most common when it is hot and humid...." \n\nOf course, there are many possibilities.  The best thing to do is not to scratch  it, nor treat the condition over the counter.  Get in to see a dermatologist as soon as possible, as you are in discomfort; or contact your primary care physician for a referral, if your insurance company requires that.\n\nFeel better soon!
1187799
I HAD THIS SAME THING!  ugh, its so annoying, haha.  its probably really dry skin or a harmless fungus.  what i did was use a moisturizer daily and about every other day i put on hydrocortisone (ointment for dry skin) and tolnaftate (an anti-fungal cream).  both of these you can get over the counter at your local pharmacy and are safe and effective to use.  after a month or so i still have some SLIGHT discoloring, but it is not nearly as noticable as it was before and no longer bothers me.  i also got a tan, too, which might have helped!  if this doesn't work, you will probably have to see a doctor or a dermatologist to get a stronger cream or different diagnosis.
447540
For two years I had skin outbreaks on my upper back, both upper arms and upper chest and on the left side of my face. They were insanely itchy and ranged in size from a small spot to the size of a bread and butter plate. For two yrs this was diagnosed as shingles even though all the creams medications and treatments were not working. Ive recently now been diagnosed with Lupus. This skin irritation is Discoid Lupus. There is no cure and its horrible. Sometimes i will not go outside for weeks because the outbreaks look like some dreaded catchy disease and I can imagine what people would think. There could be many things this could be. Plz go see your doctor. Don't leave it n accept one opinion. It could be something quite serious and the earlier its diagnosed the quicker you can get the relevant treatment. Good Luck. Hope its just a minor little problem.
1024109
Lack of pigmentation.
760083
Sounds like you may be starting.  Sometimes the blood can take on a brownish tint.
1057704
It's on your facial T-zone- nose, mouth and chin.-What about your forehead`?\nPlus arms and back -these are all areas where sweat accumulates.\nCould be a heat rash.\nCould also be an acute Photosensitivity reaction(PLE)\nLast option could be a dermatomycosis.\nNone of them life-threatening,just uncomfortable for the sufferer.\nStay out of the sun.Use Calamine LOTION:\nSee your doctor.
1031382
there could be some infection there. Just put a clean dry dressing on every day. do not use neopsorin on it. This just keeps the area wet. Give it a couple more days. What you could do is take a pen and mark the area of redness on your arm and if the redness goes out of this area you know it is getting bigger and should probably get on an antibiotic. Sometimes the trauma to the area can cause it to be red. This is not always a sign of infection. If you start to notice a large amount of puss like drainage and redness, then get to a dr.
311606
I am guessing that you're in USA? I'm in London, where we found 2 good solutions to this problem when my daughter had it. First of all, know it'll stop once all your hormones settle down. But whilst you wait to grow out of it, go to your pharmacy and ask for a perspiration blocker. They are aerosols, just like a normal deodorant, but really keep you dry all day.The other thing available here is a pad....worn like a bra, but it goes under your arms and soaks up all the sweat. No more staining! You just wash them out at night and they're dry in minutes. Good luck! But it WILL go away soon, I'm sure.
1146500
I have issues with darker skin on my elbows and someone told me to cut a lemon in half and just rub my elbow in it for 10 minutes a day or so and they lightened right up, it's just one of those things skin do.  There are also skin lightening products, but they contain chemicals which would probably irritate the sensitive armpit area.
1125673
hairy armpits on woman