in planning a course of psychotherapy for borderline patients, clinicians m
ust take into account the heterogeneity of the clinical presentation in the
borderline domain. Borderline personality disorder is usually accompanied,
for example, by one or several "symptom disorders," such as an eating diso
rder, depression, posttraumatic stress disorder, premenstrual tension, diss
ociative disorder, or anxiety disorder-not to mention one or more other per
sonality disorders. The nature of the "comorbidity" in each patient will de
termine which medications, if any, are applicable. The accompanying persona
lity disorders will have an impact on amenability to psychotherapy. The mai
n forms of therapy currently in use are supportive, cognitive-behavioral (i
ncluding dialectical behavioral therapy) and psychodynamic (including tracs
ferenae-focused psychotherapy). Group therapy is often used adjunctively wi
th any of these approaches. The main question is no longer, Which of these
approaches is best, overall? but rather, Which approach is best for which t
ype of borderline patient? Contemporary research is addressed to this latte
r question.