ICSE Class 9: Causes and Categories of Diseases Videos | Diseases and Illness

Asthma attack is an acute disease which develops suddenly and lasts a short time.

Tuberculosis is a chronic disease which develops slowly and worsens at a later period. 

A disease or disorder which lasts a short time, comes on rapidly and is accompanied by distinct symptoms is an acute disease.

Harmful radiations, chemicals and pollutants are the causes of cancer.