I'm a little confused with this one. I'm not sure if you're wanting signs of an abusive relationship, or the possible outcomes. I'll go with the latter. There are numerous problems that can be involved in both verbal and phsyical relationships: stress, emotional, mental and physical damage. The list can go on. These type of relationships strain relationships with family and friends because they usually know, and suffer watching the victim deal with the abuse. And not to mention, the ultimate "problem" resulting in death of either the abused, or abuser. If you or anyone you know is dealing with abuse, please contact 1-800-799-SAFE (7233), or visit http://www.ndvh.org/.
I hope I've helped.