Does corticosteroid (dexamethasone) have an effect on the postoperative period after laparoscopic hernia repair, when it comes to pain, postoperative nausea and vomiting and convalescence. This randomized, double-blinded study compares dexamethasone versus placebo. The patients are recommended one day of convalescence. The medicine or placebo is given before operation. The patients fill out questionnaire before operation and three hours after operation and in the following three days. The patients also register when they return to normal activities and work.