immune system AE inflammation AE SIDER: C0021368 SS, YH HPO: HP_0007891 MedDRA: 10061218 WEB: http://en.wikipedia.org/wiki/Inflammation MP: MP_0001846 an immune system disorder AE that results in complex biological response of vascular tissues to harmful stimuli, such as pathogens, damaged cells, or irritants. Inflammation is a protective attempt by the organism to remove the injurious stimuli as well as initiate the healing process for the tissue greater than expected response to injury, infection, or insult.