Abreaction, the dramatic reliving of traumatic events under hypnosis, is a powerful therapeutic intervention useful in the treatment of victims of trauma. First systematically applied in World War I, abreaction coupled with psychotherapeutic processing of the recovered material is increasingly being used with victims of child abuse and chronic PTSD. Abreactions are helpful in recovering dissociated or repressed traumatic material, reconnecting missing affect with recalled material and for transforming traumatic memories. Although abreactions can be induced with medications, hypnosis is the method of choice except in acute situations where it is not possible to establish rapport. A variety of hypnotic techniques for the induction and management of abreaction are discussed, together with the indications and contraindications for their use.