english: Their pain receptors, called nociceptors, trigger in response, cueing the brain to release a flood  of neuropeptides that inflame the cranial blood vessels, swelling and heating up the head.
non_english: Njihovi receptori za bol, zvani nocireceptori, se aktiviraju, podstičući u mozgu oslobađanje velike količine neuropeptida koji stvaraju upalu krvnih sudova u mozgu, i dolazi do oticanja i grejanja glave.