RT Book, Section A1 Goldfarb, Noah A1 Schultz, Brittney A2 Soutor, Carol A2 Hordinsky, Maria K. SR Print(0) ID 1190940322 T1 Skin Diseases of the Trunk T2 Clinical Dermatology: Diagnosis and Management of Common Disorders, 2e YR 2022 FD 2022 PB McGraw-Hill Education PP New York, NY SN 9781264257379 LK dermatology.mhmedical.com/content.aspx?aid=1190940322 RD 2024/03/28 AB The trunk is a general term for the core body region including the chest, abdomen, flanks, and back. Excluding the V-neck and upper back, most of the trunk is covered by clothing, and thus is less exposed to sunlight. Therefore, photo-aggravated or photo-induced dermatoses can frequently be seen on the upper chest and upper back, but typically spare the rest of the trunk. On the other hand, the lower trunk is more commonly involved with dermatoses related to clothing. Clothing may incite rashes due to allergic contact dermatitis from chemicals in the clothing, soaps, dryer sheets, and laundry detergents. Clothing also may create a warmer, humid environment ideal for the development of diseases such as folliculitis, acne, and tinea versicolor.