Certain behaviors are indicators that can help parents or friends recognize the threat of suicide in a loved one. Since mental and substance-related disorders frequently accompany suicidal behavior, many of the cues to look for are symptoms associated with such disorders as depression, bipolar disorder (manic depression), anxiety disorders, alcohol and drug use, disruptive behavior disorders, borderline personality disorder, and schizophrenia.
Some common symptoms of these disorders include:
Extreme personality changes
Loss of interest in activities that used to be enjoyable
Significant loss of or increase in appetite ...