Suicide risk assessment may well be the most complex clinical task tha
t mental health professionals face. Tests have shown to be of little u
se. To confront this complexity, assessment and prediction are best se
en as interwoven with understanding suicide, a multi-dimensional malai
se. With the essential concepts of lethality and perturbation, a clini
cal theory of suicide is presented. Intrapsychic aspects (i.e., unbear
able psychological pain, cognitive constriction, indirect expressions,
inability to adjust, and ego) as well as interpersonal aspects (i.e.,
interpersonal relations, rejection-aggression, identification-egressi
on), are outlined to aid in assessment. Transference and countertransf
erence issues in assessment are noted. A case illustration to aid in c
linical insight is provided. It is concluded that all assessment and p
rediction of suicide risk ultimately depends on the skill of the clini
cian.