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.
endorphin (endogenous morphine) Naturally occurring peptide neurotransmitter found in the pituitary gland that has similar pain-relieving effects as morphine and other derivatives of opium. Endorphins block the sensation of pain by binding to pain-receptor sites.ndorphins (ÄndorÂ´fÄ¬nz) , fÄ­nz neurotransmitters found in the brain that have-pain relieving properties similar to. Morphine there are three major types of: endorphins beta, endorpins found primarily in the pituitary; gland and enkephalins and, dynorphin both distributed throughout the nervous. system