DS spots on knees

[kelper]

Well, DS is NOT a sporner :(
He has a collection of odd spots on his knees, 5 one one which are in various stages of past popping, but he has one on the other knee that is FULL of pus, but you can't touch it, he screams the place down (9 and with severe ADHD).
He lets me touch it, but won't let me pop it :( When do children become sporners? This is a beautiful little spot, full of pus, but DS is being dramatic. Is it bad to go and pop it while he sleeps?

[CrazyNameCrazyGuy]

Glue a drawing pin onto your finger so when he lets you 'touch' it, the spot accidentally pops

----> joking, before anyone calls Social Services

[Fivetoomany]

I need a pic before I can answer