Forms of Acute Inflammation

In this article we will discuss the Forms of Acute Inflammation. So, let’s get started.

Forms of Acute Inflammation

Catarrhal inflammation

• A form affecting mainly a mucous surface, marked by a copious discharge of mucus and epithelial debris
• Large amount of mucinous secretions
• Example common cold

Exudative inflammation

One in which the prominent feature is an exudate

Serous inflammation

• One producing a serous exudates
• Copious exudates
• High concentration of proteins
• Source of fluid from plasma and mesothelial cells
• Examples are synovitis, peritonitis and burn blisters

Fibrinous inflammation

• One marked by an exudate of coagulated fibrin
• Protein-rich fluid exudates- Fibrinogen
• Source of fluid- Mucosal and serosal membranes
• Example- pericarditis

Suppurative/purulent inflammation

• One marked by pus formation
• Pus produced by pyogenic organisms
• Pus consists of damaged tissues and dead neutrophils
• Examples are abscess, empyema, pyomyositis, etc

Hemorrhagic inflammation

• This occurs when there is vascular damage. Red blood cells may leave the vessels either through damaged area or by a process of passive diapedesis

Pseudomembranous inflammation

An acute inflammatory response to a powerful necrotising toxin, characterised by the formation on a mucosal surface of a false membrane composed of precipitated fibrin, necrotic epithelium and inflammatory leukocytes.

Traumatic Inflammation

One that follows a wound or injury

Necrotising inflammation

• The exudates is dominated by accumulation or induction of tissue necrosis without appreciable fluid or exudation
• Example- Avascular necrosis