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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Small Bruise On My Collar Bone?

On the last day of my vacation (in Mexico), I noticed a small bruise forming on my collar bone. Later that day, the bruise got larger, and then I noticed a jellybean size bump in the middle of this bruise. I have no recollection of injuring myself. I am 100% sure that I did NOT wake up in the middle of the night and smash into a wall. I have no idea what this bruise is from, or if it is something I should be worried about. Can someone PLEASE help ease my mind?
Fri, 16 Jan 2015
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General & Family Physician,  's  Response
Hello and thank you for your question. It sounds like you may have had a bite from some sort of insect. Sometimes our bodies react to insect bites (even the ones we do not feel at the time) by forming a bruise and a small cyst like lump. This should go away on its own. I would not worry about it unless you become sick in some other way. If you develop fevers, rash or pain please see a doctor. Thank you for using HCM.
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What Causes Small Bruise On My Collar Bone?

Hello and thank you for your question. It sounds like you may have had a bite from some sort of insect. Sometimes our bodies react to insect bites (even the ones we do not feel at the time) by forming a bruise and a small cyst like lump. This should go away on its own. I would not worry about it unless you become sick in some other way. If you develop fevers, rash or pain please see a doctor. Thank you for using HCM.