Someone gave us some hand-me down pants that I put on DS, 17mo, last night, he has a rash this morning I suspect these might somehow be the cause. On the side of his calf this morning there's a 1x1.5" oval shaped rash, mostly lots of dark red distinct little spots, The area is slightly raised from inflammation. He also is fighting an illness of some sort, I've had a sore throat a few days I think he might too, he's been fussy. Anybody have a clue what it might be? Could the two be related, might it be something serious? How would you treat this? DH said it seemed like an allergy so I put cortisone cream on it, no change yet.