Which statement about central desensitization is true?

Prepare for the Tissue Injury, Healing, and Pain Test. Utilize flashcards and multiple-choice questions with hints and explanations. Ensure you're ready for the exam!

Central desensitization reflects how the central nervous system modulates pain signaling, with changes occurring in spinal cord and brain circuits. In this process, inhibitory and modulatory neurotransmitters such as endogenous opioids, GABA, and glutamate shape how nociceptive information is transmitted upward. Endogenous opioids released through descending inhibitory pathways dampen transmitter release at dorsal horn neurons, while GABAergic interneurons increase inhibition of second-order neurons, reducing the signal that reaches higher brain centers. Glutamatergic signaling participates in the plastic changes that adjust central excitability, contributing to how pain perception is ultimately altered. This central modulation is distinct from peripheral desensitization, and it relies on more than histamine pathways while clearly affecting pain perception.