Incest comes in many forms. Father to daughter, mother to son, brother to sister, and any family or extended family member to another. When a child is wounded in this manner, there is a deep sense of betrayal, loss and grief. When betrayed in this way, the child feels like he or she just "lost" that parent and begins to grieve the fantasy "good" parent they thought they had. Reactions and defense mechanisms to incest are many--dissociation, numbing the pain with alcohol/drugs, promiscuity and other forms of acting out like cutting oneself, perpetrating incest on others (multigenerational) and the list goes on. If you or a loved one has experienced incest, it is best to get help and work through the betrayal, hurt, and unprocessed PTSD.