Substance abuse disorder occurs more frequently among individuals diagnosed with bipolar disorder than among persons who are not diagnosed with bipolar disorder. substance abuse disorder and bipolar disorder are therefore

comorbidity

Explanation:

Comorbidity is term that is used to define a situation where a person has more than one disorder all at once.

An example will be when a person is suffering from social anxiety disorder but at the same time they are also affected by major depressive disorder, this is referred to as comorbidity which means co-existing.

Some diseases that are likely to coexist are diabetes, cardiovascular illness , cancer ,dementia and other infectious diseases. Anxiety disorder and substance abuse also coexist.

Challenges of Comorbidity

It may be very costly to treat an individual because different consultation have to be made in order to evaluate proper ways to administer diffrent medicines for these two co-existing ailments. This is crucial because diffrent medicine may interact and cause problems for a person.

tbh idk same thing here