Bruise or something more serious?

[worried in toronto]

Hi Doctor Rockoff,

I am writing to you in concern about a brown spot on my kneecap. It looks like a bruise, however it is completely painless. I just noticed it a day or so ago and definately brown in colour. Sortof a dark brown circle just like a bruise but no pain whatsoever.

I am wondering what this could be? If its from a sleeping irritation, a bruise, or something more serious. I am 25 years old and have not been diagnosed with any health problems. Could it be skin cancer? Or a sign of some serious disease?

Is it possible i am overreacting about this?

[GAMomofTwo]

A related discussion, Brown Bruise/Birthmark was started.

[Alan Rockoff, MD]

Right on!

Dr. Rockoff

[worried in toronto]

Hi Dr. Rockoff,

It appears the discoloration is lightening a tad. It is also blanching when touched. Strange as it is painless.

[Alan Rockoff, MD]

Most likely a bruise form some minor and unrecalled trauma.  Things that come on that fast are usually from trauma.  Leave it alone and watch it go away over the next few days.  If it stays around for two weeks despite not being messed with, see a doctor, but I doubt you'll have to.

Best.

Dr. Rockoff