Is Sex Addiction a Real Disease?

Celebrities have made headlines in recent years citing "sex addiction" as a reason for their infidelity.

But is what's known to psychologists as "hypersexual disorder" a real pathology or just a lame excuse for bad behavior?

The issue is a real one, since there's been talk of including hypersexual disorder in the upcoming revision of the Diagnostic and Statistical Manual of Mental Disorders (DSM), considered the "bible" for psychologists.