ĐẶC ĐIỂM LÂM SÀNG VÀ MỘT SỐ YẾU TỐ LIÊN QUAN ĐẾN MỤN TRỨNG CÁ VÙNG NGỰC LƯNG

Abstract

Background: Acne vulgaris affecting the chest, back, and face is recognized to share a common pathogenesis, despite variations in localized cutaneous manifestations. Primarily prevalent among adults, this condition is modulated by a multifactorial interplay of age, gender, and genetic predisposition. Notably, the inflammatory process carries a significant risk of extensive scarring across broad anatomical regions. Such sequelae often result in substantial aesthetic impairment, necessitating comprehensive clinical management to mitigate long-term dermatological and psychological impacts. Objectives: To describe the clinical characteristics and assess various factors associated with chest and back acne vulgaris. Materials and Methods: A cross-sectional descriptive study on 55 patients with chest and back acne at Can Tho Hospital of DermatoVenereology from December 2024 to December 2025. Results: The majority of patients in the study were male (54.5%), aged 18 - 25 accounted for the highest proportion (45.5%). The position with the highest proportion is the back (65.5%). Common symptoms are itching (65.5%) and stinging (47.3%). Comedones (67.3%), papules (65.5%) are the most common. Acne severity is related to gender and cosmetic use with statistical significance. Conclusion: The majority of subjects in this study were male, predominantly within the 18–25 age demographic. Anatomically, the dorsal region (back) emerged as the most prevalent site of involvement. Patients frequently reported subjective symptoms of pruritus (itching) and stinging sensations. Morphologically, the cutaneous lesions consisted primarily of comedones and inflammatory papules. Notably, among patients presenting with moderate truncal acne, the male-to-female ratio was significantly skewed at 4:1. Furthermore, a positive correlation was observed between disease severity and topical product usage; subjects diagnosed with moderate-to-severe acne exhibited a substantially higher frequency of cosmetic application compared to those categorized as "almost clear" or possessing only mild involvement.