I have a very tender, swollen spot on my forearm - it is not red and i did not injure it - could it be a blood clot? yesterday it was itchy.

Insect bite?: Often we get insect bites without even knowing it, spider or Mosquitos or even a bee sting. Your age, risk factors, general health, and recent hiking or travel history might assist diagnosis. And a photo is often most helpful:) be well, drliza (Try over the counter hydrocortisone cream and see what happens if you are not allergic to it)