Inflammation, your skin, and macrophages are all part of the body's immune system response to a pathogen. allergic general practiced specific

Inflammation, your skin, and macrophages are all part of the body's general immune system response to a pathogen. 
General or non-specific immune response include the cells and mechanisms for defending the host from infection, but those mechanisms are not long-lasting. It includes anatomical barriers (like skin or mucose membranes),recruitment of immune cells to sites of infection, removal of pathogens by white blood cells (like macrophages)…

It's cell theory. easy name i would think.