Abstract : Introduction: Psoriasis vulgaris is the most common type of psoriasis, comprising 90% of psoriasis cases. The treatments for psoriasis are available in the form of topical and systemic agents. When considering treatment regimen, the severity of the disease should be assessed. Patients with mild psoriasis can be treated with targeted phototherapy or excimer light. However, whole-body phototherapy is indicated for extensive psoriasis. Methods: This study aims to describe the prevalence and characteristics of psoriasis vulgaris patients undergoing phototherapy in the Dermatology and Venereology Clinic of Bali Mandara General Hospital for the period of January 2018 - December 2022. This was a descriptive retrospective study using data from medical records. Results: The number of psoriasis vulgaris patients visits were 261, 238 patients of which underwent phototherapy. Based on gender, there were 141 males (59.2%) and 97 females (40.7%). Based on the age group, most patients were between 51 and 60 years old (11.7%). The predilections of lesions in psoriasis vulgaris patients undergoing phototherapy were upper extremity (20%) and trunk (16.8%). Another treatment administered in addition to phototherapy alone was the combination of phototherapy and oral antihistamine in 76 patients (31.9%). Conclusions: This study showed that the prevalence of psoriasis vulgaris patients was dominated by male patients with peak prevalence in the fifth decade of life.