Why do cuts sting?

Cuts sting primarily due to the activation of pain receptors in the skin, known as nociceptors. When the skin is broken, these receptors detect damage and release chemicals like histamines and prostaglandins, which send pain signals to the brain. Additionally, exposure to air and certain substances can further irritate the wound, intensifying the stinging sensation. This response serves as a protective mechanism, alerting the body to potential harm.