TY - CHAP M1 - Book, Section TI - Hyperhidrosis and Anhidrosis A1 - Kurta, Anastasia O. A1 - Glaser, Dee Anna A2 - Kang, Sewon A2 - Amagai, Masayuki A2 - Bruckner, Anna L. A2 - Enk, Alexander H. A2 - Margolis, David J. A2 - McMichael, Amy J. A2 - Orringer, Jeffrey S. PY - 2019 T2 - Fitzpatrick's Dermatology, 9e AB - AT-A-GLANCEPrimary focal (essential) hyperhidrosis:Idiopathic and symmetric and can affect the palms, soles, axillae, craniofacial region, groin, other areas, or combination of body sites.Treatment is based on severity of symptoms and location and follows a stepwise approach.Secondary hyperhidrosis:Can occur from underlying systemic illnesses, medications, or both (obtaining a detailed medical history is crucial).The pattern of sweating is classically generalized, but sometimes can be focal or regional if caused by neurologic disease or trauma, or a primary dermatologic cause (eg, eccrine nevus).Treatment should target the underlying disease process or eliminate or change medications that the patient takes, but this is often not feasible.Anhidrosis:Anhidrosis may occur because of congenital or acquired causes (secondary or idiopathic anhidrosis).Can become a medical emergency leading to hyperthermia, heat stroke, or death. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/19 UR - accessmedicine.mhmedical.com/content.aspx?aid=1161325581 ER -