A member asked:

I scraped my leg on a car door, now there's an oval shaped black&blue mark that developed a lump inside it w/swelling& numbness in my knee. do i worry?

2 doctors weighed in across 2 answers

Watch and wait: If the swelling is stable and numbness is not increasing, you may watch and wait. If it does not start improving in a couple of weeks, please consult your doctor. You may try warm compresses to hasten the resolution of the hematoma - collection of blood in the tissue.

Answered 5/25/2014

4k views

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Dr. Peter Ihle answered

Specializes in Orthopedic Surgery

If no sign of infect: ...ion, most likely an organizing hematoma. Numbness can B front injury 2 the superficial sensory nerves when scraped. Usually will run its course, though U may always have a small lump there. Ice, compression, elevate, later heat. If run fever or progresses C Ur PCP, numbness usually goes away or Ur brain gets tired of hearing about it & U won't notice it.

Answered 11/28/2016

3.8k views

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