Types of Diseases

As we  have indicated above. there are diseases,that  a person is born with, for example, a baby may have a defective heart at the time of its birth. Then there are some diseases like- hamophilia  in which  there is a severe  tendency to bleed even from a slight cut, because the parents or grand parents had  them. These diseases are called "congenital" diseases. Some physical deformities are caused to babies at the time of  their birth because they are handled by untrained attendants. Then there are also diseases,  which are broadly grouped as

• communicable or infectious,  that is they are passed on from one person to another in various ways, and, 
• non-infectious. 

Communicable diseases are caused by micro-organisms and worms; examples are cholera, chicken pox. tuberculosis, malaria etc. some comman infectious  diseases are  those which are not due to an external infection, and so they cannot be spread from person to person, for example anaemia, diabetes, arthritis etc. Some common infectious  and non-infectious diseases are listed in Table.