Could racing thoughts and frequent mood swings be signs of a bipolar disorder or they can be signs of depression as well?

Sxs: Racing thoughts and frequent mood swings might be seen with hypomania or mania related to bipolar disorder. It may be due to anxiety or an anxious depression. Certain drugs & medications can cause these symptoms. Mood swings are more prominent in some personality disorder. If you are experiencing these sxs - an comprehensive psychological assessment can help delineat the cause. Take care.