Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Call emergency services or go to an emergency department if there is an immediate risk of suicide, self-harm, or harm to someone else.
Emergency help is also appropriate when severe confusion, violence, or loss of contact with reality makes the situation unsafe.
Stay with the person if it is safe to do so, and reduce access to weapons or other lethal means while help is arranged.
Contact the treating clinician promptly if early warning signs appear.
These may include sleeping less, becoming unusually energetic or irritable, spending more, talking rapidly, withdrawing from others, or developing persistent depressive symptoms.
Early treatment may prevent symptoms from becoming more severe.
Seek urgent professional help if there is rapidly worsening mania, psychosis, severe agitation, several nights with little or no sleep, dangerous impulsive behavior, or an inability to eat, drink, take medicine, or manage basic needs.
Bipolar disorder usually requires long-term follow-up, including during periods of stable mood.
Routine visits may review symptoms, sleep, functioning, side effects, substance use, physical health, and whether treatment still fits the person's goals.
Recommended laboratory monitoring depends on the medicine being used.
Every sign above is quoted from the sofidex article on Bipolar disorder. If you are not sure, err upward — it is always reasonable to be checked.