The focus of the present paper is the main problems found in the study of male child sexual abuse. Aspects of child sexual abuse of males reviewed here include (a) definitions, (b) prevalence rates and under-reporting, (c) effects, (d) possible mechanisms of how sexual abuse affects male victims, (e) gender related risks, (f) types of abuse, (g) perpetrators of abuse, and (h) the victim/perpetrator cycle. We conclude that while much research is urgently required in this area, some tentative conclusions are warranted and some important trends are beginning to emerge for future research directions.