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A 23-year-old female 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 doctor answers2 doctors weighed in
Dr. Gurmukh Singh
Pathology 51 years experience
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.
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Dr. Peter Ihle
Orthopedic Surgery 56 years experience
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.
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Nov 28, 2016


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