The external & internal anal sphincters(voluntary or involuntary) & anal glands are most commonly affected in Anal Disease. Anal canal can be affected due to: physical trauma an instrumentation Anal physical activity Anal voluntary trauma/anal X Other Anal infections Anal infections (like ZIKA)/Anal trauma (HIV) are 100% preventable.

Are Anal disorders a kind of Primary disorders or only a secondary disorder? What are the cause-oriented directions for Anal disease diagnosis at present?