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I know these disorders can all be comorbid with each other and of course, I know the DSM-V criteria for them. But my question is this, what are findings you've come across that were helpful in teasing out if someone has say, predominantly borderline personality disorder or PTSD as opposed to MDD (especially treatment resistant cases) and persistent depressive disorder (or vice versa)? They have many overlapping findings such as the mood disturbances, effects on behavior, concentration, course of illness, etc. Many histories are not the most straightforward. Some findings I felt helpful (of course they are not the final determinants of my assessment) are things like:
-numerous failed adequate medication trials (although admittedly I rarely see a person who was trialed on an MAOI...I remember 1 person who had a dramatic response when people were starting to suspect a personality disorder too!)
-timing of initial onset of symptoms (such as in association with a major trauma)
-if symptoms are chronic and consistent versus a clearly episodic nature
Also, many patients have comorbid substance use disorders too, making the diagnosis even more challenging. It just seems like so many people get labeled with "depression." However, if some of these cases are truly primarily borderline personality disorder or PTSD instead, that would certainly change my treatment approach. Thoughts?
-numerous failed adequate medication trials (although admittedly I rarely see a person who was trialed on an MAOI...I remember 1 person who had a dramatic response when people were starting to suspect a personality disorder too!)
-timing of initial onset of symptoms (such as in association with a major trauma)
-if symptoms are chronic and consistent versus a clearly episodic nature
Also, many patients have comorbid substance use disorders too, making the diagnosis even more challenging. It just seems like so many people get labeled with "depression." However, if some of these cases are truly primarily borderline personality disorder or PTSD instead, that would certainly change my treatment approach. Thoughts?