Types of inflammation:

• Basically, there are two types of inflammation: Acute and chronic

Acute inflammation:

• It is transient response to injury and their onset is sudden.
• They are short-lived, usually lasts for few minutes to hours or few days.
• They are characterized by exudation of fluid and plasma protein (oedema) and migration of leukocytes, mainly neutrophils.
• Chemical mediators like histamine, bradykinin, prostaglandins, leukotrienes plays role in acute inflammatory response to injury.

Chronic inflammation:

• It develops gradually and associated with acute inflammation. If injurious agents are not removed through acute inflammatory process, then chronic inflammation develops.
• It is of long duration usually lasts for few days to weeks, months or even years.
• Active inflammation, tissue destruction and healing process occurs simultaneously in this inflammation.
• It is characterized by infiltration of mononuclear cells, tissue destruction and repair involving vessel proliferation and fibrosis.
• Chemical mediators like cytokines, chemokines, macrophages, plasma proteins plays role in chronic inflammation.