These mild diseases do not need to be treated.
For some people Crohn's is a mild disease, requiring little treatment.
It can be a mild disease or cause blindness.
This is important research because about 30% to 50% of American adults have mild to moderate gum disease.
A small number of people with MS have only mild disease and do well without treatment.
"Do you want to give a vaccine - with unknown side effects - to prevent a very mild disease?"
There does not appear to be any benefit in mild disease.
However, influenza C is less common than the other types and usually seems to cause mild disease in children.
Usually it's a mild disease, but some forms are very dangerous.
Some - for example, those with limited or mild diffuse disease - can expect to live 20 to 50 years after diagnosis.