(1) Old English phoulcat (foul cat). Originally a reference to the fitch, the wild ancestor of the domesticated ferret, because of their ability to emit a foul smelling spray when frightened. (2) Later, used in North America as a reference to the skunk. Both are actually not cats, but members of the weasel family, Mustelidae.
The symptoms of withdrawal can last for a few days up to a few weeks. It really is dependent on each person and their personal addiction. The most common withdrawal times usually last somewhere between a week and 14 days.
How long buprenorphine withdrawal lasts varies depending on how frequently you used the drug and how large the doses were. If you were a heavy user, burprenorphine withdrawal may be more intense and last longer than someone using buprenorphine for a few months.