What is Hyperhidrosis?

  • Sweating, also known as perspiration, is an essential bodily function that helps regulate body temperature. 

  • When perspiration becomes excessive, it is known as “Hyperhidrosis”. It can occur anywhere on the body but most frequently occurs in the axilla or underarms. 

  • It can cause a person to change their clothing frequently through the day.  

  • While this condition is not life threatening, its’ psychological, emotional and social impacts are substantial and take a significant toll on its sufferer. 


  • Hyperhidrosis* is usually caused by overactive sweat glands, however, the exact cause is unknown. 

  • It can also be secondary to other health issues- obesity, diabetes, menopause and thyroid abnormalities.  


Botox® can help minimize the problem.  When injected into the affected area, Botox® blocks the chemical responsible for activating the body’s sweat glands and can improve hyperhidrosis by 80-90%. The effects can last 5 months to one year (35% of patients) in some individuals.

*Botox for hyperhidrosis is not covered by OHIP but is covered by most insurance plans. Contact your insurance provider to determine if Botox treatment is covered under your plan.