The inflammatory response. It's like calling 911.
Say your house is on fire and you call 911 and no one comes. Your house will burn down. If that's your body and the inflammatory response, then you get septic and die.
Say you call 911 and the firefighters come and put out the fire, save your pets, and all is good. That's the inflammatory response doing what it's supposed to do.
Now, let's say you have a candle burning in the window and you call 911. The firefighters come, 5 trucks! They chop down the doors with axes, break in the windows, and douse your house with water: attic to cellar. For a candle. That's the inflammatory response in hypersensitivity mode. Overreaction. Autoimmune disease. Body attacking self. Not so good.
In rheumatoid arthritis the body attacks the synovial lining of joints. In ankylosing spondilytis the body attacks the spine. In lupus the body attacks the nuclei of cells. Can you imagine...attacking your own cell nuclei, think about it.
That's what I taught today.