You might need urgent mental health help if you experience thoughts of harming yourself or others, feel completely hopeless, or are having psychotic symptoms like hallucinations or delusions. Other red flags can be a sudden and severe mood shift, inability to care for yourself, or a danger to your physical health (e.g., refusing to eat or sleep). If you're in immediate crisis, it’s important to contact emergency services or a crisis helpline. Otherwise, you can reach out to a mental health professional for an urgent assessment.