cytokines

Inflammation is often visible and painful. Red, angry swellings make their presence felt. Yet sometimes inflammation is invisible and painless; you would never know it was there. When inflammation flares in the brain, it does so silently. Chronic, low-grade inflammation in the brain is a factor in the development of many neurodegenerative diseases, including depression and dementia. It is also seen in Parkinson’s disease, multiple sclerosis and Huntington’s disease.