Question:
What is disease? How many types of diseases have you studied? Give examples.
(CCE 2011)
Solution:
Disease. It is a condition of derangement or disturbed functioning of the body or its part. Types of Diseases:
1. On the Basis of Duration. Acute and chronic.
2. On the Basis of Period of Occurrence. Congenital and acquired.
3. On the Basis of Causal Agent. Infectious and non-infectious.
Infectious or communicable diseases can be contagious or non-contagious. Non-infectious disease may be deficiency disease, metabolic disease, degenerative disease, allergy, cancer and injury.
Examples. Influenza, tuberculosis, pneumonia (infectious), cancer (non-infectious).