Major Depressive Disorder

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The post-stroke patient is at significant risk for various psychiatric syndromes. The most commonly reported of these in the literature are post-stroke depression (PSD) and post-stroke dementia (PSDem), which may present simultaneously with overlapping mood and cognitive symptoms. In this article, we offer a review of current literature on post-stroke psychiatric syndromes and an integrated clinical approach to screening, diagnosis, and pharmacologic intervention.

It’s a classic risk/benefit dilemma: Does preventing suicidality-assuming suicidality can predict suicide-justify scaring some doctors away from prescribing antidepressants for young patients?

The prevalence of major depression following stroke ranges from 10% to 40%. Other psychiatric disorders, including anxiety disorders, apathy and cognitive impairment are also common. Psychiatrists need to be on the lookout for symptoms not just immediately poststroke, but up to six months after the event.

Tricyclic antidepressants and antipsychotics are known to prolong cardiac repolarization and induce QTC interval prolongation, possibly putting patients with mental disorders at higher risk of cardiovascular diseases. The mechanism of gender difference in vulnerability for cardiovascular diseases is still unclear, but the role of hormones is one of possible explanatory factors.

Although a lot remains to be learned, much is already known about the early childhood characteristics that predispose children to antisocial behavior and violence in adolescence and early adulthood, an expert in psychopathology said recently at a National Institutes of Health conference.

It has been well established that there is a high incidence of depression in conjunction with Alzheimer's disease and other forms of dementia. What are the best assessment and diagnostic methods, and which treatments will produce the best results?

The relationship between depression and epilepsy is bidirectional as not only are patients with epilepsy at higher risk of developing depression but patients with depression have a three- to sevenfold higher risk of developing epilepsy. Several studies have found that the presence of depression in patients with intractable epilepsy was a stronger predictor of poor quality of life than the frequency and severity of seizures. The principles of managing depression in epilepsy are reviewed in this article.

Although light therapy is an old treatment, new therapeutic uses are being researched. What is the optimal time and strength of light treatment to best help patients with depressive disorders?

According to the World Health Organization, five of the 10 leading causes of disabilities worldwide are psychiatric conditions. More than 450 million people worldwide suffer from mental and brain disorders, and nearly 1 million people commit suicide each year. Because of this, many health care organizations and governments are forging partnerships to combat the daunting talk of providing quality health care around the globe.

Patients with anorexia nervosa often attempt to deceive health care professionals because they do not want treatment for their disorder. Thus, physicians must maintain a high index of suspicion for signs and symptoms of AN due to its potentially fatal complications.

Transcranial magnetic stimulation has been applied in a growing number of psychiatric disorders as a putative treatment. As a focal intervention that may exert lasting effects, TMS offers the hope of targeting underlying circuitry and ameliorating the effects of psychiatric disorders. The ultimate success of such an approach depends upon our knowledge of the neural circuitry involved, on how TMS exerts its effects and on how to control its application to achieve the desired effects. Current challenges in the field include determining how to enhance the efficacy of TMS in these disorders and how to identify patients for whom TMS may be efficacious.

Assessing and treating patients with suicidal behavior is not an easy task. Acts of suicide cannot be predicted; the best a psychiatrist can hope for is the ability to identify a patient's risk factors and reduce them. With the publication of a new practice guideline, it is hoped that psychiatrists will be better equipped to deal with this particularly vexing challenge.

In many preliminary studies, including one presented at the recent 2nd World Congress on Women's Mental Health, the naturally occurring steroid dehydroepiandrosterone has been shown to be an effective treatment for mild-to-moderate midlife depression. Questions remain, however, as to its mechanism of action, the risk of side effects and its interactions with medications.

With increased concern about suicidal impulses in children taking antidepressants, the FDA has decided to step in. Two committees held a meeting to discuss various plans for classifying suicidal events, along with some of the difficulties in deciding whether certain events qualify as suicide attempts.

What are some of the pitfalls of treating patients from varying cultural backgrounds, what cultural issues should psychiatrists be aware of and how can they fit varying culturally based psychiatric disorders into a proper diagnostic framework? Using case studies, Dr. Moldavsky explores the clinical implications of culture in psychiatric practice.

Psychopharmacologic management has become increasingly complex, and physicians run the risk of precipitating drug-drug interactions when certain drugs interact via the cytochrome P450 system. In addition, the P-glycoprotein transporter may play a role in certain drug-drug interactions. While physicians currently rely on Web sites and textbooks to avoid potentially morbid and lethal interactions, electronic medical records may play a crucial role in the future.

Anorexia nervosa, bulimia nervosa and binge-eating disorder remain challenging disorders for the practicing psychiatrist. While psychopharmacological agents play an important role in the overall treatment of eating disorders, current empirical evidence does not support their sole use. A recipe consisting of evidence-based psychopharmacological agents together with evidence-based psychotherapeutic approaches is usually required for a successful outcome.