Hello, I have uncontrollable itching also and jerky movements that are coming from two different issues, one 3 disc, zosters (shingles) outbreaks, and liver problems. My doctor gave me Gabapentin 600mg; it says to take one every four hours but sometimes I need to double up but I have Hepatitis C and it is heading downhill so comfort is my key goal. I have scars on arms and legs from the itching. Good luck.