OnabotulinumtoxinA injections (Botox; formerly botulinum toxin type A) are effective for the treatment of primary axillary and palmar hyperhidrosis. (Strength of Recommendation [SOR]: A, based on a systematic review of randomized controlled trials). Topical aluminum chloride (Drysol) is effective for the treatment of palmar hyperhidrosis. (SOR: B, based on one small controlled study). Iontophoresis is effective for treating palmar, plantar, and axillary hyperhidrosis. (SOR: C, based on one unblinded, randomized controlled trial). There are no identified randomized, placebo-controlled trials of thoracoscopic sympathectomy or systemic medical therapy for the treatment of hyperhidrosis