Due to the fact that the fear is not life altering, it can usually just be left untreated.

And head lice can cause other, more serious infections if they are left untreated.

Severe depression left untreated isn't happening for lack of medical care.

Such children cannot fight off common infections and, left untreated, usually die before their first birthday.

Additionally, left untreated, the disorder can have a devastating effect on marriage.

As a result, diseases are left untreated and allowed to become more severe.

In many instances they are left untreated until it is too late.

Or the childhood maladies left untreated because there is no money for a doctor.

Of course, the truth also was that the blood poisoning would certainly have killed her, left untreated.

However, the joints on the ceiling of the tunnel have been left untreated.