Acute inflammation:
- It is an immediate and early response to injurious agents.
Aetiology:
- Infectious agents: These include bacteria, viruses, fungi, chlamydiae, rickettsia, mycoplasma, helminths, protozoa, and arthropods (insects).
- Chemical agents: These includes toxins, acids, alkalies and other caustic substances.
- Physical agents: These includes burns, trauma, electricity shock, radiation, excessive cold and heat.
- Immunologic reaction: Hypersensitivity reactions, autoimmune diseases
- Nutritional imbalances
- Necrotic tissue