Acute (medicine) facts for kids
In medicine, an acute disease or condition either happens for a short time, as in acute infection, or doesn't last long. The word acute may often be confused by the general public to mean 'severe'. This is different: something can be acute but not severe.
Subacute is described as between acute and chronic. An example is subacute fever symptoms or subacute endocarditis.
Acute (medicine) Facts for Kids. Kiddle Encyclopedia.