Impotence (Erectile Dysfunction)

Impotence means that a man's penis doesn't get hard enough to have sexual intercourse. The man cannot get or maintain an erection. The medical term is erectile dysfunction (ED).  
To continue reading this article, you must login.
  • Research health conditions
  • Check your symptoms
  • Prepare for a doctor's visit or test
  • Find the best treatments and procedures for you
  • Explore options for better nutrition and exercise
Learn more about the many benefits and features of joining Harvard Health Online »