I think the lines are run lines. From what I learned (we get those lines)they are comonley from round worms. The boys and I got them all up and down our bodies. Mostly on our abdomen and backs and even our faces and neck. I read as they die they get closer to your skin and cause red streaks, or scratch looking things. I always new they weren't scratches when they went away after the worm left. And yes, the big ones sting and are really uncomfortable.
Drink your tea! And more water then usual if you can, it will help get the toxins out that are causing the rage and anxiety!