Anxiety symptoms

Anxiety symptoms are a complex set of psychological and physiological manifestations, including excessive worry, restlessness, and autonomic hyperactivity, which characterize various psychiatric conditions (StatPearls, NBK532310). Rather than representing a single molecular target, these symptoms result from the dysregulation of multiple neurotransmitter systems, most notably the gamma-aminobutyric acid (GABA), serotonin, and norepinephrine pathways (NIMH, 'Anxiety Disorders'). Therapeutic intervention involves the use of pharmacological agents that modulate specific proteins—such as the GABA-A receptor or the serotonin transporter (SERT)—to mitigate the underlying neurobiological imbalances (PubMed, 12479165). Because 'Anxiety symptoms' refers to a phenotypic clinical state or a disease endpoint rather than a discrete protein, enzyme, or receptor, it is classified as a medical indication. In drug discovery, it serves as a primary outcome measure for evaluating the efficacy of compounds targeting the central nervous system.

Other names

AnxietyNervousnessApprehensionPanic symptomsAnxious arousalGeneralized anxiety

Drugs used to alleviate anxiety symptoms target diverse molecular pathways: benzodiazepines act as positive allosteric modulators of the GABA-A receptor to increase inhibitory neurotransmission; selective serotonin reuptake inhibitors (SSRIs) and serotonin-norepinephrine reuptake inhibitors (SNRIs) block the reuptake of serotonin and norepinephrine respectively; buspirone acts as a 5-HT1A receptor partial agonist; and gabapentinoids like pregabalin bind to the alpha-2-delta subunit of voltage-gated calcium channels to reduce excitatory neurotransmitter release.