I am NEVER a person to tell anyone to see an MD, but seriously, see a dermatologist! This string-tying stuff is making me get the shivers.
I had some after pregnancy, DS would twiddle them while he nursed, it drove me batty. I went to the derm, he put a bit of lidocaine in them (he was brilliant about that, starting pushing the plunger thing as he put the needle in and I didn't feel it AT ALL...sometimes old school dudes really know what they're doing) and I believe he snipped them with scissors but I didn't look. He also did a mole that I really loved (on my shoulder, guys always seemed to love it) but was starting to get mushy and weird.
About an hour later it stung like crazy as the lidocaine wore off, but otherwise it was absolutely fine.
It was 100% covered by my insurance, even the skin biopsy they did for each of them (especially the mole).