Abstract

In a discussion about human enhancement it is common to make a distinction between medical treatment and enhancement. The treatment‐enhancement (TE) distinction may work as long as we are faced with extreme and evident examples of treatments and enhancements, but it leaves us with unanswered questions if we are confronted with the borderlines cases in the muddy gray area between obvious treatment and obvious enhancement. This chapter focuses on this gray area, shows its complexities, and asks how we can answer questions regarding the medical domain, or regarding the moral obligation for reimbursement if we cannot depend on the TE distinction. The example of adult attention deficit hyperactivity disorder (ADHD) is used to show how difficult it is to distinguish between treatment of disease and enhancement of normal function, especially given the phenomena of medicalization, disease mongering, and expanding disease definitions.