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What causes red welt under armpit?

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Posted on Tue, 19 May 2015
Question: I had one red welt and one long welt appear on my back by my armpit. One red welt is big and on my back by my armpit and the other is not as big and by my armpit. They appeared after I played soccer one night. As far as I know they weren't there prior to the game. I was treated by 2 different doctors this past month for what they thought were big bites. Those itched and had centers where it looked like a bug bit. These don't look like that. These look more like huge mosquito bites or horse fly bites but they don't itch. I wouldn't even know they were there unless I could see them. They don't itch yet at least. Any thoughts?
doctor
Answered by Dr. Rahul Kumar (44 minutes later)
Brief Answer:
Contact dermatitis

Detailed Answer:
Hello
Thanks for the query.
It is looking like contact dermatitis.
If you see carefully both the welts are on apposing sides.
I treat such cases with a topical steroid cream like fluticasone and anti histamine tablet.
I have seen excellent response with these.
You can try these in consultation with your doctor.
Let me know if you have any other doubt.
Thank you
Above answer was peer-reviewed by : Dr. Vinay Bhardwaj
doctor
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Follow up: Dr. Rahul Kumar (22 minutes later)
I started doing that last night and they both seem to be getting better. What could be the cause. I've had some small red bumps on my neck too, twice this month. They go away in about 3-4 days though with basic antibiotic cream. I've used the detergent I'm using now in the past but not all the time. I'm using the same brand of deodorant but a different scent. I'm using cortizne cream and I was gonna wait a few days before seeing a doctor. Hoping they will go away. Like I said, seem to be getting better already
doctor
Answered by Dr. Rahul Kumar (2 hours later)
Brief Answer:
Allergic condition

Detailed Answer:
Hello
As I mentioned it is an allergic condition.
A single cause cannot be determined.
You might be allergic to various things like dust, pollen, cloth etc.
There is nothing to worry.
It's a common thing.
Just apply a mild steroid and take an antihistamine tablet.
You will be relieved.
Thank you
Above answer was peer-reviewed by : Dr. Vinay Bhardwaj
doctor
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Follow up: Dr. Rahul Kumar (15 hours later)
Thank you:)!
doctor
Answered by Dr. Rahul Kumar (7 hours later)
Brief Answer:
Welcome

Detailed Answer:
You are most welcome.
Above answer was peer-reviewed by : Dr. Vinay Bhardwaj
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Answered by
Dr.
Dr. Rahul Kumar

Dermatologist

Practicing since :2010

Answered : 6318 Questions

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What causes red welt under armpit?

Brief Answer: Contact dermatitis Detailed Answer: Hello Thanks for the query. It is looking like contact dermatitis. If you see carefully both the welts are on apposing sides. I treat such cases with a topical steroid cream like fluticasone and anti histamine tablet. I have seen excellent response with these. You can try these in consultation with your doctor. Let me know if you have any other doubt. Thank you