Cold sore: Viruses or localised infections can cause the eye to redden â the problem usually starts in one eye, but can spread to both. The cold sore virus, which 90 per cent of us carry, can sometimes also infect the eye, causing inflammation.
Endorphins are chemicals, called peptides, that are made in the body. They have much of the same effect on a person as opium or morphine. As a result, they actually lower the feeling of pain in the body and can create a feeling of bliss or euphoria.
It consists of two parts: endo-and-orphin; these are short forms of the words endogenous and morphine, intended to mean a morphine-like substance originating from within the body. The class of endorphin compounds includes Î±-endorphin, Î²-endorphin, Î³-endorphin, Î±-neo-endorphin, and Î²-neo-endorphin. The principal function of endorphins is to inhibit the transmission of pain signals; they may also produce a feeling of euphoria very similar to that produced by other opioids.