My itch has been going on for 10 months. I have tiny little lumps under my skin that itch and a few skin spots that itch. The tiny lumps move around from place to place but remain generalized. Have had every text available with no results and the itch is maddening. Should i insist on a lymph nod biopsy or just ask for another cat scan. My last one was in april. Thanks, l.m.d.