Worried about my 5 year old son

I am concerned about my five year old son. Last night before bed he was complaining that his "heart hurt". I figured he had indigestion or something like that since otherwise he was playing normally. He woke up around midnight absolutely screaming in pain. He started out saying it was his heart hurting, then he said it was his back. We ended up taking him the the ER since he was in so much pain. Once he got settled in at the ER, he calmed down and didn't seem like he was in as much pain. If fact, when the doctor finally saw us, he said it wasn't hurting at all. They really didn't do much besides take his vital signs which were all normal besides a low grade fever. The doctor pretty much told us to watch him and bring him back if it turns into chest pain.

I didn't think much until right before we left, I noticed this weird reddish/purplish mark on his forearm. It almost looked like marker, except it wouldn't rub off and looking closely, you can tell it's underneath the skin. When I got home, I did a little research and am now slightly concerned that it may be petechiae. It does not fade at all when pressed on. Looking back, he has also had a ton of bruising on his legs mainly, but he's a VERY active little boy, so I always just assumed it was normal kid bruises. He has also complained of leg pain quite a bit over the last few months.

Combining the pain he had with the low grade fever and now this mark on his arm, I'm concerned. I'm posting a picture of this mark on his arm, I'm sorry it's not very clear. I plan on taking him into his pediatrician tomorrow, but feeling anxious until then. Any opinions?

Thanks so much.

[bluebird777]

Hello and welcome to the forum

Sorry to hear that your son is having some difficulties!  I just saw this posting and am guessing your son has been to see the pediatrician.  What did he/she say about his symptoms?

Please keep us posted on how he is doing.  :)