Different Types of Depression

While different types of depression share a lot of the same symptoms, there can be differences in causes, intensity, and how long symptoms last.

Different types of depression include major depressive disorder, persistent depressive disorder, peripartum depression (postpartum depression) and seasonal affective disorder (SAD).

Major Depressive Disorder

Major depressive disorder symptoms last for at least two consecutive weeks.

Persistent Depressive Disorder (Dysthymia)

Persistent depressive disorder symptoms are chronic, lasting for at least two years (one year in children). Persistent depressive disorder may be less severe than major depressive disorder, but it can still cause distress.

Peripartum Depression (Postpartum Depression)

While “baby blues” is a common experience, it typically lasts only 1-2 weeks. If you have a major depressive disorder episode during pregnancy or within four weeks of giving birth that lasts longer, speak to your healthcare provider.

Seasonal Affective Disorder (SAD)

Seasonal affective disorder symptoms happen during the fall and winter months as the days grow shorter. It can also be related to Vitamin D deficiency.

Getting the Right Diagnosis

Is Depression the Root Cause — or a Symptom?

While depression is often it’s own condition, symptoms of depression can be related to a physical health condition. For this reason, it is important to talk with your health care provider to rule out or address potential medical causes of symptoms.

Depression (and other mental health conditions) can also be part of or exist alongside another mental health condition. For this reason, careful assessment and accurate diagnosis is important.

If you have tried many methods of treating your depression and feel like nothing is working – or if there is uncertainty about your diagnosis, consider speaking to your provider about reevaluating your diagnosis or treatment plan. It may also be helpful to get a second opinion or seek additional assessment.