Inflammation is a double edged sword. It is necessary to heal acute trauma like a cut, abrasion, burn or a bite.
Without an immune response to such trauma then healing cannot take place. This is a normal body response. It is when a chronic condition exists, that inflammation can do much damage to the tissues of your body.
There are certain conditions that produce chronic inflammation. These conditions produce a host of bad guy molecules in your body that can hurt your immune system and produce a wide variety of health problems like diabetes, high blood pressure, arthritis, thyroid problems and brain issues.