The above post is incorrect.
To become a Certified Wound/Ostomy and/or Continence Nurse (CWOCN, CWON, CWCN)
RN with a Baccalaureate Degree or higher degree with a major in nursing
RN with a Bachelor's Degree in another field; and one year of RN clinical nursing experience following RN licensure.
To become a Certified Wound Specialist (CWS)
A licensed healthcare professional with a Bachelor's, Master's or Doctoral degree with 3 or more years of clinical wound care experience.
These are the two most recognized and respected wound care certifications in nursing, there are other 'certs' that are week long classes with a test at the end that confer a credential, but really are better as education than credentialing.
Here is a link to the comparison of certs:
Welcome to wound world!