A certified sex therapist is a licensed professional, specifically trained in the diagnosis and treatment of sexual problems.  In addition to their education and backround in psychology or medicine, therapists have extensive training and supervision and have passed strict professonal requirements to receive their certification.

The use of "sex therapy" or "sex therapist" is not clearly defined in most states.  There are many self-appointed experts who call themselves sex therapists on the internet, in magazines or phone books but lack proper training and qualifications. 

A Certified Sex Therapist educates and guides patients towards discovery and resolution of their sexual concerns.  Sex therapy sessions never involve sexual contact, or any kind of sexual activity or nudity in front of the therapist.  Certified Sex Therapists are expected and bound to conduct themselves in a professional and ethical manner with their clients, at all times.