en Dermathology Dermathology case report case report <p><span style="font-size:14px;"><span style="font-family:times new roman;"><span style="color:#0000FF;"><strong><em>Background: </em></strong></span>Segmental pigmentation disorder (SegPD) is a rare type of cutaneous dyspigmentation. This hereditary disorder, first described some 20 years ago, is characterized by hypo and hyperpigmented patches on the trunk, extremities and less likely on the face and neck. These lesions are considered as a type of checkerboard pattern.</span></span></p> <p><span style="font-size:14px;"><span style="font-family:times new roman;"><span style="color:#0000FF;"><strong><em>Case Presentation: </em></strong></span>Herein, we present a 26-year-old male who presented with hyperpigmented patches on his trunk, neck and upper extremities. Considering the clinical and histopathological findings, the diagnosis of SegPD was confirmed.</span></span></p> <p><span style="font-size:14px;"><span style="font-family:times new roman;"><span style="color:#0000FF;"><strong><em>Conclusion: </em></strong></span>SegPD is a somewhat neglected entity which should be considered in differential diagnosis of pigmentation disorders.</span></span></p> segmental pigmentation, checkerboard, Blaschkoid, dyspigmentation 223 225 http://caspjim.com/browse.php?a_code=A-10-524-1&slc_lang=en&sid=1 Kamran Balighi kamran.balighi@yahoo.com 10031947532846009122 10031947532846009122 No Depatment of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran Kambiz Kamyab kamyab@tums.ac.ir 10031947532846009123 10031947532846009123 No Depatment of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran Arghavan Azizpour azizpour63@gmail.com 10031947532846009124 10031947532846009124 Yes Depatment of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran Elahe Amini elaheamini32@yahoo.com 10031947532846009125 10031947532846009125 No Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran Shabnam Fahim dr.fahim92@gmail.com 10031947532846009126 10031947532846009126 No Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran