unexplained skin discolouration

[tigermay]

Hi I have suddenly developed a sudden discolouration in my skin about the size of a 5p just at the base of my knee. very red but not painful and not like a bruise at all. Worried in case it might be the start of a stress fracture due to running lots of miles recently. Marathon next week so dont want any problems. Any suggestions?

[Heidi]

Hi
I think its unlikely to be a stress fracture. You usually can't see anything in these cases and the pain is the first indication.
If there is no pain on it at all, either when you use the leg or when you touch it, then I wouldn't really worry. If you are concerned, then visit your GP.