I have been on hydrocodone for several months for chronic pancreatitis.It works ok along with a fentanyl patch.Am I addicted?Probably.However,I am 5 months pregnant now and the drs all agree the baby will go thru some withdrawls after delivery.I am now trying Ultracet and my main complaint is the AWFUL nightmares.I have never heard of this side effect.You cant explain nightmares to a dr without sounding like an idiot,but my husband says I also twitch and scream during the night,when I finally do get to sleep.Slight itching,but lots of "creepie crawlies"when I try to relax.Ive decided to 86 the patch and deal with the ultracet,using my hydro for the more severe bouts of pain.