What Is a Major Depressive Episode? Signs, Length and Next Steps

A major depressive episode is a period of at least two weeks when low mood or loss of interest, along with other symptoms such as sleep changes, fatigue and trouble concentrating, are present most of the day, nearly every day, and get in the way of daily life. It is the core feature of major depression, and it is treatable with therapy, medication or both.

This article is for adults in Texas who think they may be in a depressive episode, or who have had one before and want to understand what it is, how long it may last and what to do next. This article is general information, not a medical recommendation. Do not start, stop or change any medication without talking to your prescriber.

What is a major depressive episode?

A major depressive episode is a defined stretch of time in which depression symptoms are persistent and disabling, rather than a bad day or a hard week. The National Institute of Mental Health (NIMH) explains that depression causes symptoms that affect how a person feels, thinks and handles daily activities, and that symptoms must be present most of the day, nearly every day, for at least two weeks for a diagnosis.

The word "episode" matters. It means depression has a beginning and, with treatment and time, usually an end. Some people have a single episode in their lifetime; others have episodes that return. For a fuller look at the condition behind episodes, see our guide to major depressive disorder.

What are the symptoms of a depressive episode?

Symptoms include persistent sad, empty or irritable mood and a loss of interest or pleasure, along with changes in body and thinking. The American Psychiatric Association (APA) lists symptoms such as feeling sad, irritable, empty or hopeless, and notes they occur most of the day, nearly every day, for more than two weeks with a change in functioning.

Common symptoms include:

• Sad, empty or hopeless mood, or irritability.
• Loss of interest or pleasure in usual activities.
• Sleeping too much or too little.
• Changes in appetite or weight.
• Fatigue or low energy.
• Feeling worthless or excessively guilty.
• Trouble thinking, concentrating or making decisions.
• Moving or speaking more slowly, or feeling restless.
• Thoughts of death or suicide.

Not everyone has every symptom, and only a clinician can make a diagnosis.

How is an episode different from ordinary sadness?

An episode is different from ordinary sadness because it is longer, broader and harder to shake. Sadness usually follows a specific event and eases with time or comfort; a depressive episode lingers most days and affects sleep, energy, thinking and the ability to enjoy things.

Here is an example. Someone who feels sad for a few days after a breakup, but still enjoys time with friends and sleeps normally, is likely going through ordinary sadness. Someone who, weeks later, cannot get out of bed, has stopped eating regular meals and feels worthless most of the day may be in a depressive episode and should be evaluated.

Grief can look similar, and the two can overlap. A key question is whether you can still feel moments of connection or relief, and whether symptoms are improving over time. Our article on the difference between sadness and depression explores this further.

How long does a depressive episode last?

A depressive episode lasts at least two weeks by definition, and many last longer, especially without treatment. Length varies widely from person to person. Treatment can shorten an episode and lower the chance it returns.

If you start treatment, expect gradual change. MedlinePlus, from the National Library of Medicine, explains that antidepressants may take several weeks to work and that people often keep taking them for months after feeling better, as advised by their prescriber. Therapy also tends to work over weeks rather than days.

Recovery is rarely a straight line. Many people notice sleep or energy improving before mood lifts. It also helps to learn your personal early warning signs, such as pulling away from friends, sleeping in or losing interest in a favorite hobby, so that you and your clinician can act early if symptoms start to return.

What causes a depressive episode?

An episode of depression usually results from a mix of factors rather than a single cause. Genetics and family history, stressful or painful life events, other health conditions and some medicines can all play a role.

MedlinePlus notes that certain medicines and medical conditions, such as viral infections and thyroid disorders, can cause symptoms like depression. That is why an evaluation often includes questions about physical health and sometimes lab tests ordered by a medical provider.

Could a depressive episode be part of bipolar disorder?

Yes, depressive episodes also occur in bipolar disorder, which is why clinicians ask about past periods of unusually high energy. The NIMH explains that bipolar disorder involves episodes of depression and episodes of mania or hypomania, with mood and energy that are much higher than usual.

Tell your clinician if you have ever had days of feeling unusually energized, needing very little sleep, talking fast or taking big risks. This helps them choose the safest treatment approach. For more, read about bipolar 2 vs depression.

How is a depressive episode treated?

A major depressive episode is commonly treated with psychotherapy, medication or a combination, along with steps to support sleep, activity and connection. The NIMH notes that all medications can have side effects and that finding the best treatment may take some trial and error.

• Psychotherapy: approaches such as cognitive behavioral therapy and interpersonal therapy help with thought patterns, behavior and relationships.
• Medication: antidepressants are a class of medicine used to treat depression; a prescriber reviews benefits, side effects and your health history.
• Daily supports: regular sleep and wake times, physical activity, and staying in touch with people you trust.

MedlinePlus advises never to stop an antidepressant on your own; talk with your prescriber about any change.

What should you do if you think you are in an episode, step by step?

If you think you are in a depressive episode, the most helpful step is to get evaluated soon rather than waiting it out. Try these steps:

1. Check your safety. If you have thoughts of ending your life, call or text 988 now.
2. Write down your symptoms. Note when they started and how they affect sleep, appetite, work and relationships.
3. Note your history. Include past episodes, any periods of very high energy and family history of mood disorders.
4. Book a visit. Start with a primary care provider, therapist or psychiatric clinician.
5. Tell one person. Let someone you trust know what is going on.
6. Protect the basics. Keep a regular wake time and eat something at regular intervals.

What should you say at your appointment?

At your appointment, describe your symptoms, how long they have lasted and how they affect your life. The NIMH suggests preparing a list of questions and being specific about your symptoms. Use this checklist:

• "I have felt down or lost interest in things for about [number] weeks."
• "My sleep, appetite and energy have changed in these ways."
• "I have or have not had episodes like this before."
• "I have or have not had periods of unusually high energy."
• "I take these medicines and supplements."
• "What are my options for therapy, medication or both?"

When should you get help right away?

Get help right away if you have thoughts of suicide, cannot care for yourself, or notice symptoms worsening quickly. The NIMH lists warning signs such as talking about wanting to die, feeling hopeless or trapped, feeling like a burden, withdrawing, giving away possessions and increased alcohol or drug use.

• Not eating or drinking enough for several days.
• Hearing or seeing things others do not.
• Rapidly increasing alcohol or drug use.

What should Texans know about depression care?

Texans can find low-cost and community options through 2-1-1 Texas and their county's Local Mental Health Authority, along with private care. 2-1-1 Texas connects callers with mental health clinics and counseling; you can dial 2-1-1 or 877-541-7905, or chat in English or Spanish.

Insurance coverage for therapy and psychiatric visits varies by plan, so review your plan or call your insurer. Telehealth rules about where a patient may be during a visit vary by state, so if you plan to travel, ask your clinician before the visit.

Getting support in Texas

Lyte Psychiatry offers therapy, psychiatric evaluation and medication management in Texas. In-person visits are available at Lyte Psychiatry's clinic in Pantego, in the Dallas–Fort Worth area. Lyte Psychiatry offers telehealth visits to patients who are physically located in Texas at the time of the visit. All Lyte Psychiatry services are available in Spanish.

Most new patients are seen within 1–2 business days. Weekend appointments are limited. Availability, insurance and clinician fit require confirmation. Lyte Psychiatry is an outpatient practice. It does not provide inpatient care, crisis or after-hours coverage, medically supervised detox, or intensive outpatient or partial hospitalization programs.

Learn more about depression care and medication management, or read self-help for depression.

If you are in a mental-health crisis in the United States, call or text 988. Call 911 for immediate danger.

Educational information, not a diagnosis or individual treatment plan.