What can you do about a significant other who has a history of blackouts when under extreme emotional stress but he won't go to the doctor and you're afraid he may do something irrational one day?

It's important to express your concerns to your significant other in a calm and supportive manner, emphasizing your care for their well-being. Encourage them to seek professional help by highlighting the potential benefits of addressing their emotional stress and blackouts. If they remain resistant, consider consulting a mental health professional yourself for advice on how to handle the situation and ensure your safety and theirs. Additionally, establish a safety plan for yourself and any support systems you might need in case of an emergency.