Health Conditions What age does hyperhidrosis start? March 11, 2026 by Mercier | Leave a Comment Hyperhidrosis, a condition causing excessive sweating, can begin at any age, though it most commonly appears during childhood or adolescence. The onset varies depending on the type of hyperhidrosis, with primary focal hyperhidrosis often starting between ages 1 and 10, and secondary hyperhidrosis linked to underlying medical conditions or medications. Understanding the Onset of Hyperhidrosis […] Read more ยป