Background: Acute pain occurs as a strong uncomfortable sensory and emotional experiece as sociated with actual or potential tissue damage. Pain after surgery occurs as consequence of surgical tissue damage. The expeience of postoperative pain is very individual so it we must look at ach individual separately. Aim: To investigate and compare the intensity of pain of patients treated with diffeent types of neck dissection (radical dissection and selective disecction ) at the Clinick for Otorhinolaryngology and Head and Neck Surgery at the KBC Sestre milosrdnice. Methods: The three-month interventional prospective study included a total of 50 respodents from KBC Sestre milosrdnic, Department of Head and Neck Surgery. 50 of them were divided in to two groups of patients . In the first group (25 patients) a modified radical neck dissection was performed , and in the secon group (25 patients) a selective neck dissection . Pain intensity was monitore during a numerical pain assessment scale ( NRS) three times for the first three postoperative days, followed by another days with one measurement on the day of discharge. Subjects were treated for pain with analgesic therapy according to the department `s protocal with the addition of additional analgesic theraphy when pain according to the NRS was 4 or more points on a scale of 1-10. Finally, analaysis of the collected data on pain duration, lenght, and treatment out come was made. Results: The need for analgecics is more pronounced in patients with radical neck dissection who have increased pain levels and the need for more frequent regulation and addition of anlgesics throught out the first postoperative week than in patients treated with selective neck dissection. The need for good regulation of analgesia is most pronounced in the first four postopertive days, when the level of pain is highest. Conclusion: Modified radical neck dissection causes higher pain intensity than selective neck dissection causes higher pain intensity than selective neck dissection as measured by the NRS scale an the amount of analgesics needed to supress pain.