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The risk factors [110] for treatment resistant depression are: the duration of the episode of depression, severity of the episode, if bipolar, lack of improvement in symptoms within the first couple of treatment weeks, anxious or avoidant and borderline comorbidity and old age. Treatment resistant depression is best handled with a combination ...
In addition to post-treatment relapse, depressive symptoms can even recur in the course of long-term therapy (tachyphylaxis). Also, currently available antidepressants all elicit undesirable side-effects, and new agents should be divested of the distressing side-effects of both first and second-generation antidepressants. [6]
Noradrenergic and specific serotonergic antidepressants (NaSSAs) are a class of psychiatric drugs used primarily as antidepressants. [1] They act by antagonizing the α 2 -adrenergic receptor and certain serotonin receptors such as 5-HT 2A and 5-HT 2C , [ 1 ] but also 5-HT 3 , [ 1 ] 5-HT 6 , and/or 5-HT 7 in some cases.
The drug is used to treat acute and chronic pain. It has shown effectiveness in the treatment of fibromyalgia, though it is not specifically approved for this purpose. The drug is also under investigation as an antidepressant and for the treatment of neuropathic pain. It is related in chemical structure to venlafaxine.
Treatment guidelines from the National Institute of Health and Clinical Excellence [37] recommend against the use of SSRIs in this disorder. Those from the American Psychiatric Association note that SSRIs confer no advantage regarding weight gain, but that they may be used for the treatment of co-existing depression, anxiety, or OCD.
While antidepressants are largely effective at treating major depressive disorder (MDD), not all people experience improvements after they start taking an antidepressant.
Serotonin antagonist and reuptake inhibitors (SARIs) are a class of drugs used mainly as antidepressants, but also as anxiolytics and hypnotics. They act by antagonizing serotonin receptors such as 5-HT 2A and inhibiting the reuptake of serotonin, norepinephrine, and/or dopamine. Additionally, most also antagonize α 1-adrenergic receptors.
This is a complete list of clinically approved prescription antidepressants throughout the world, as well as clinically approved prescription drugs used to augment antidepressants or mood stabilizers, by pharmacological and/or structural classification.