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.
What are Endorphins? The word Endorphin comes from the two words, endogenous + morphine.. Endorphins are small, protein molecules that are produced by cells in your nervous system and other parts of your body. An important role of endorphins is to work with sedative receptors that are known to relieve common pain.