Medically reviewed by Timothy J. Legg, Ph.D., CRNP on January 7, 2020 — Written by Jayne Leonard
Depression is one of the most common mental health conditions in the United States. There are several different types of depression.
People with depression experience distinct periods — lasting at least 2 weeks — of sadness, low energy, and loss of interest in things that they once enjoyed. People sometimes refer to these periods as depressive episodes.
The experience of depression can vary significantly among individuals. For example, it may cause some people to oversleep and others to sleep very little. Each type of depression can have distinct symptoms and effects.
Read on to learn about some of the more common types of depression.
When to see a doctor
Individuals should see a doctor if they feel depressed, particularly if a low mood persists for 2 weeks or more or if it happens regularly.
People should seek urgent help if they have thoughts of suicide or self-harm.
Anyone who thinks that they have postpartum depression should see a doctor right away, especially if their symptoms make it difficult to care for the baby or if they have thoughts of hurting themselves or the baby.
A doctor can support the person to care for the baby and themselves.