We live in south eastern Pennsylvania and I have a playset and a crab sandbox for my daughter. Last week, something strange happened. My neice and daughter we're playing in the sand box and on the swing set. They came in for lunch and we noticed there was blood dripping down the back of the neck of my neice. We asked her what happened and she did not know and did not feel anything. With closer inspection, we noticed that it looked like an insect bite and discovered 3 more bites on the back of her head and neck. They were wounds that were dripping blood and she never felt the bite or any irrataion afterwards. Well, both girls ate lunch, then we noticed dried blood on my daughters ear. We inspected her head and found 9 bites. We asked both girls what happened and again they said they never felt anything. We took my daughter to the doctors and he had no idea of what could have caused the bites. I inspected the sand box and swing set and only found your typical spiders,ladybugs and a tick. Now, I have been around for awhile and have never seen anything like it, where your bit and it draws blood and you don't even know you are bit. 2 days later, the wound is healing and still no irratation. Then last night, I was talking with a friend, and his daughter got the exact same bites on the back of her head. She was also playing in sandbox and swingset and the same exact symptoms (no pain or irratation but bleeding). This is very unusual considering that the bites are painless and yet numerous and extreme. Have you ever heard of something like this and if so, what could it be?
I posted 2 pictures of the wounds at http://www.gwana.net/bugbite.htm
We are concerned and would like to know what it is and what we can do to erradicate it.
Thank you for your help.