Melasma is a common dermatosis that involves changes in normal skin pigmentation, resulting from the hyperactivity of epidermal melanocytes. The consequent hyperpigmentation is mostly induced by ultraviolet radiation. Clinically, melasma is characterized by light to dark brown macules that usually occur on the face, although they can also affect the cervical and anterior thoracic regions and up...

introduction. the changes trend from traditional to community oriented medical education necessitates that the social medicine courses be more effective and presented at an appropriate time. the object of this study is the comparison between medical physiopathology and stager students’ competency in practical social medicine course. methods. all the medical students who entered the health appre...