Hyperbaric oxygen may reduce neurophatic pain and promote wound healing. Established anti
inflammatory effects of HBO may contribute to this effect. In a previous publication the
investigators studied the effects of HBO on secondary hyperalgesia using a well established
heat injury model. In a new - blinded study design, the investigators wish to investigate
and- or confirm previous results, i.e. that HBO therapy reduce secondary hyperalgesia and
improving therapy of severe pain conditions.