Withdrawal differs depending on the individual. Some people have none, some have mild ones, some have permanent ones. That's why you taper off these drugs as slowly as necessary and, if it wasn't slow enough and the withdrawal is severe, you can go back on the drug at the last dose that felt fine and taper off more slowly. That being said, you can still get bad withdrawals from these drugs even if you do everything to avoid them. Either they go away or they don't and they almost always do. Advice would depend on if this was done correctly or not, as noted above. As for your role, again, if it wasn't done properly, there's still time to do it properly if it's so bad you're finding it necessary to write in here. If it's resulting in emotional problems the person never had before stopping the drug, definitely go back on it and taper off more slowly. If it's just what's called the "Paxil flu," it will pass eventually, in which case just reassure the person. I'd also recommend you guide the person to withdrawal websites, ignore the horror stories and look at the success stories. And know that, again, most don't get protracted withdrawals and move on in a reasonable amount of time.