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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.
However, most antidepressant treatments do not directly enhance DA neurotransmission, which may contribute to residual symptoms, including impaired motivation, concentration, and pleasure. [ 21 ] Preclinical and clinical research indicates that drugs inhibiting the reuptake of all three of these neurotransmitters can produce a more rapid onset ...
Since 1980, every code that has been listed in the DSM has been an ICD-9 code. However, DSM-5, unlike previous versions of DSM, contains both ICD-9 and ICD-10 codes. [16] [17] Though recent editions of the DSM and ICD have become more similar due to collaborative agreements, each one contains information absent from the other. [18]
The specific interaction between drugs and their receptors is referred to as "drug action", and the widespread changes in physiological or psychological function is referred to as "drug effect". [2] These drugs may originate from natural sources such as plants and animals, or from artificial sources such as chemical synthesis in the laboratory.
The pharmacology of antidepressants is not entirely clear.. The earliest and probably most widely accepted scientific theory of antidepressant action is the monoamine hypothesis (which can be traced back to the 1950s), which states that depression is due to an imbalance (most often a deficiency) of the monoamine neurotransmitters (namely serotonin, norepinephrine and dopamine). [1]
A revision of DSM-5, titled DSM-5-TR, was published in March 2022, updating diagnostic criteria and ICD-10-CM codes. [52] The diagnostic criteria for avoidant/restrictive food intake disorder were changed, [ 53 ] [ 54 ] along with adding entries for prolonged grief disorder , unspecified mood disorder and stimulant-induced mild neurocognitive ...
Post-SSRI sexual dysfunction (PSSD) [63] [64] refers to a set of symptoms reported by some people who have taken SSRIs or other serotonin reuptake-inhibiting (SRI) drugs, in which sexual dysfunction symptoms persist for at least three months [65] [66] [67] after ceasing to take the drug. The status of PSSD as a legitimate and distinct pathology ...
An implicit premise in neuropsychopharmacology with regard to the psychological aspects is that all states of mind, including both normal and drug-induced altered states, and diseases involving mental or cognitive dysfunction, have a neurochemical basis at the fundamental level, and certain circuit pathways in the central nervous system at a higher level.