In Kenneth Doka's "Tasks in Coping with Life-threatening Illness," which phase is characterized by living with the disease and managing symptoms and side effects?

Chronic.

Explanation:

Disease may be defined as the situation that makes the functioning of the organs of the body dis-comfortable. The organisms that has the ability to cause disease is known as pathogens.

Two main types of disease are acute disease and chronic disease. Acute disease remains only for short period of time whereas chronic disease remains for the long period of time and sometimes may affect the long life of an individual.

Thus, the answer is chronic.