Cetirizine
"I have been on cetirizine for about 2 years now. I am now off it now. This medicine can cause severe itching when you come off of it. A full body itch that is completely distracting and makes you want to tear all of your skin off. I have tried to ween myself off of it, lowering my dose from 20mg to 10mg per day gradually over time, but this has had little effect. After about 48 hours of not having the medicine my body goes into full itch. I have to wear winter boots and oven mitts and jean clothing to prevent myself from itching. "