Severe depression symptoms: what to know

Severe depression can change emotional, physical, and mental functioning. Someone may feel empty, hopeless, numb, guilty, anxious, or unusually irritable, while activities that once mattered no longer bring pleasure. Fatigue, slowed movement, appetite changes, difficulty sleeping, excessive sleep, and daytime sleepiness may appear. Concentration and memory can suffer, making conversations, work, or personal care harder. Symptoms vary between people, and their presence does not prove depression; a clinician also considers medical causes, substance use, medicines, and periods of unusually elevated energy or reduced need for sleep.

Make a prompt appointment with a primary-care clinician or mental health professional, particularly when symptoms interfere with eating, hygiene, work, parenting, or relationships. Write down changes in mood, sleep, appetite, energy, concentration, and safety so the pattern is easier to describe. Tell a trusted person what is happening and ask for practical company with appointments or daily tasks. Treatment can include psychological therapy, prescribed medicine, or both; do not stop a prescribed medicine suddenly without medical advice.

Seek emergency help immediately for suicidal thoughts, a self-harm plan, an overdose, severe confusion, hallucinations, extreme agitation, or inability to keep yourself safe. Stay with a trusted person and contact local emergency services or attend the nearest emergency department. Request urgent review for a rapid deterioration, several nights with little sleep plus unusually high energy, or inability to meet basic needs. These signs need assessment even if the person is reluctant to call their symptoms depression.

Ask which symptoms are most urgent, what assessment is needed, how to make a safety plan, and which treatment options could improve sleep, energy, and concentration.