The prison *might* be responsible IF a known common effect or risk of Percocet withdrawal is a stroke AND the way they monitored or treated him while not letting him have it was negligent or careless. Prisons have a legitimate interest in keeping Percoset out of the prison population; therefore, merely denying him medication by itself would not make them liable. There have to be a known risk which they then disregarded and/or treated inadequately to potentially make them liable. On the other hand, if a stroke is not a common or known side effect, or if that is a risk but they monitored, etc. appropriately, they did nothing wrong and would not seem to be at fault.