"what factors may make it difficult to diagnose a person with bipolar disorder as opposed to another disorder? "

The factor that makes it hard for a doctor to diagnose his or her patient of bipolar disorder as opposed to other disorders it is due to the similar symptoms that it holds just like other mental illnesses have as well, which is why it takes time and observations before a doctor diagnoses his or her patient with such an illness.

Stop doing this bruh I just seen 3 of these