We can classify illness:
According to how quickly they appear and how long they last :
And according to their origin:
– INFECTIOUS: caused by a virus or microbe. There are different types of infectious diseases depending on the agent that causes the infection:
b. FUNGAL : caused by fungi ( athlete´s foot)
c. PARASITIC: caused by protozoans (malaria)
– NON-INFECTIOUS: have other causes like poison, injuries or poor nutrition.
Click on the bottle & cigarretes if you want to know more: