Nicotine withdrawal

Nicotine withdrawal is condition of person who doesn't receive dose of nicotine for some reason, but is addicted to it. It may cause anger and depression, but it's not threating one's life. Eventually, person gets rid of addiction (if not start receiving it again).

Nicholas Rush was suffering of it during first few days aboard Destiny as there wasn't any source of nicotine aboard. It is unknown if anyone else was nicotine addicted, but if there any they were suffering of it too.