tiny red spots

[Lauren]

HI, I have got to say this is a very interesting and hepful forum!!  I was just wondering what the formal definition of peteciae (I guess that is how you spell it) is.  I have several individual ones on my body (one on my stomach, two on my thigh, one on each are and a couple on my hands.  One of them I have had forever.  They are about the size of pin pricks and to tell you the truth I do not even know how I saw them.  I was trying to find info. on the internet about them, but all I could find was there relation to leukemia and other horrible diseases!!!  This is really scaring me, I have had them every once in a while for as long as I can remember.  
  Are these something I need to be worried about?  
Are there any causes for them that are not disease related?  Sometimes it seems like I have more on my chest right when I get out of a hot shower (rarely, last time that happened was about a year ago)

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