Pain threshold

Pain threshold is not a molecule, receptor, or canonical therapeutic target. Instead, it refers to the point at which a stimulus is first perceived as painful by an individual[4][8]. This concept describes a subjective sensory phenomenon and varies widely among individuals due to genetic, physiological, psychological, and environmental factors[4][5][9]. The pain threshold is determined by the activation of nociceptors (specialized sensory neurons) that detect noxious stimuli and transmit signals through neural pathways to the brain for processing[4][7]. While molecular mechanisms—such as ion channels (e.g., TRP channels), neurotransmitters (e.g., substance P), and genetic variants in enzymes like catechol-O-methyltransferase (COMT)—influence pain sensitivity and perception[5][7], "pain threshold" itself does not refer to any specific protein or druggable entity. Therefore, it should not be considered a valid entry for structured molecular target information.