You have rightly guessed that you are suffering from alcohol withdrawal symptoms
in the form of chills, flushing
etc. Six hours of alcohol free state is enough for development of withdrawal symptoms in people who have been taking heavy amounts of alcohol for many years. In fact, this is the reason why many alcoholics need a drink first thing in the morning to be able to get up and carry on. I am not sure whether you really have panic disorder or not, because anxiety
symptoms are common in alcohol withdrawal
as well and clonazepam
works in both situations. My advice to you would be to seriously consider quitting alcohol, and to do so under medical supervision.