Aas_Study

Exotic  (imported disease ) a disease that is not found in a particular area and imported from outside it is called as exotic disease.  eg. yellow fever in india. 

Pandemic an epidemic usually large proportion  of the population  occuring of a wide geographic area such as section or entire nation , continent or the world. eg. influenza (1918,1957), cholera (1962).

Epidemic (epi = upon, demos = people) unusual occurance of a disease in a poupulation is called as epidemic.

Endemic (En=in, Demos=people) - usual occurance of a disease in a poupulation is called as endemic. eg. common cold.   

What is the etiology of disease? Casual factors responsible for the lesions or why of disease is called etiology.

Functional Disease A disease in which occur abnormal function of a tissue or organ and not present any lesion called functional disease.

Organic Disease A disease in which present lesions that is called organic disease. 

Lesion Structural changes that produce by disease on affected tissue or organ called lesion.