Depression is more than having a difficult day or feeling low for a while. It can affect mood, energy, sleep, concentration, relationships, and the ability to keep up with everyday responsibilities. It also does not look the same in every person. Understanding common types and patterns can make it easier to recognize when it may be time to ask for support.
This guide is educational, not a diagnosis. Symptoms can overlap with medical conditions, medication effects, grief, substance use, anxiety, or other mental health concerns. A licensed clinician can help sort through the full picture.
Key takeaways
- Major depressive disorder and persistent depressive disorder are two common diagnoses.
- Seasonal, perinatal, psychotic, and bipolar-related depressive episodes can require different clinical considerations.
- Persistent symptoms or symptoms that interfere with daily life are a reason to speak with a health professional.
What are the different types of depression?
Clinical names help professionals identify patterns; they are not labels a person should apply to themselves. The descriptions below are a starting point for a conversation with a qualified provider.
Major depressive disorder
Often called major depression or clinical depression, this pattern involves depressed mood or a loss of interest most of the day, nearly every day, for at least two weeks, along with other symptoms that affect daily functioning.
Persistent depressive disorder
Also called dysthymia, this involves depression symptoms that are typically less intense but longer-lasting—usually for at least two years in adults. A person may describe feeling like they have been carrying a low mood for a long time.
Seasonal affective disorder
Seasonal affective disorder, or SAD, follows a recurring seasonal pattern. For many people, symptoms begin in late fall or winter and improve in spring or summer; a smaller number experience a summer pattern instead.
Perinatal depression
Perinatal depression can occur during pregnancy or after childbirth. It is more than the short-term mood changes often called the “baby blues,” and it deserves timely, compassionate professional support.
Depression with psychotic features
In severe depression, some people experience psychosis symptoms, such as hallucinations or delusions. This requires prompt clinical evaluation. If there is immediate danger or an inability to stay safe, call 911 or go to the nearest emergency department.
Bipolar depression
Bipolar disorder includes depressive episodes as well as periods of mania or hypomania. Because care can differ from treatment for major depression alone, it is important to share any history of unusually elevated mood, markedly reduced need for sleep, impulsivity, or increased activity with a provider.
What about “situational depression” or grief?
People often use “situational depression” to describe emotional pain after a loss, major life change, relationship stress, illness, or other difficult event. It is not a formal diagnosis, but the experience is still real and support can be helpful. Grief also does not follow one timeline. A professional can help distinguish a normal response to stress or loss from a depressive disorder, and can recommend next steps when symptoms are persistent, severe, or getting in the way of life.
Local outpatient support
Looking for depression support near Nashua?
Heartfelt Recovery Centers provides outpatient depression treatment in Hudson, NH, serving adults from Nashua, Manchester, and across New Hampshire. Learn about the programs and integrated care available when depression and substance use occur together.
Common signs that deserve attention
Depression symptoms vary, but common changes can include a low, anxious, or empty mood; loss of interest in previously enjoyable activities; fatigue; trouble concentrating; changes in sleep or appetite; feelings of guilt or hopelessness; irritability; and withdrawing from other people. Some people primarily notice physical symptoms, such as aches, headaches, or digestive problems without a clear cause.
A pattern matters more than any one symptom. Consider reaching out when symptoms persist, become more intense, interfere with work or relationships, or make it difficult to manage basic responsibilities. An assessment may also help if alcohol or drugs have become a way to cope with mood, sleep, or emotional pain.
Why an assessment matters
A diagnosis is not based on one checklist alone. A provider may ask when symptoms began, how often they occur, whether they affect daily life, and whether medical conditions, medications, trauma, or substance use may be contributing. That fuller context helps guide a safer, more appropriate care plan.
How depression may be treated
Depression care is individualized. Depending on a person’s needs and clinical assessment, a plan may include psychotherapy, medication management, or both. When depression occurs alongside substance use, an integrated approach can address both conditions rather than treating them as unrelated problems. Treatment decisions should be made with a qualified healthcare professional.
At Heartfelt, outpatient options may include a more structured Partial Hospitalization Program (PHP) or a flexible Intensive Outpatient Program (IOP), depending on clinical need. The admissions team can discuss the appropriate next step and help people understand available options.
Confidential next step
Ready to explore your options?
If depression or co-occurring substance use is affecting daily life, a confidential insurance check can help you understand the next step. Heartfelt serves adults in Hudson, Nashua, Manchester, and surrounding New Hampshire communities.
Frequently asked questions about depression
What are the most common types of depression?
Major depressive disorder and persistent depressive disorder are two common diagnoses. Other recognized patterns include seasonal affective disorder, perinatal depression, depression with psychotic features, and depressive episodes that occur as part of bipolar disorder. A qualified provider can determine whether a person’s symptoms meet criteria for a specific condition.
How is depression different from sadness or grief?
Sadness and grief are natural human responses and can be intense. Depression is generally more persistent and can affect mood, motivation, sleep, appetite, concentration, and daily functioning. Because the experiences can overlap, professional support can help clarify what is happening and what care may be useful.
When should I seek help for depression?
Seek support when symptoms persist, worsen, interfere with daily life, or lead to using alcohol or drugs to cope. If you or someone else has thoughts of suicide or self-harm, call or text 988 in the U.S. for the Suicide & Crisis Lifeline. In a life-threatening emergency, call 911.
If you need immediate help
If you or someone you know is in immediate danger or cannot stay safe, call 911 or go to the nearest emergency department. For suicide or mental health crisis support in the U.S., call or text 988.
Sources
MD Mitchell Grant Cohen
Dr. Mitchell G. Cohen is a board-certified Internal Medicine specialist with over 34 years of experience in patient-centered healthcare. A graduate of Hahnemann University School of Medicine, Dr. Cohen completed his internship at the University Health Center of Pittsburgh, where he gained invaluable hands-on experience. He is also a certified addiction specialist, holding membership with the American Society of Addiction Medicine (ASAM).
Currently based in Nashua, NH, Dr. Cohen is affiliated with Saint Joseph Hospital, where he provides comprehensive care focusing on both internal medicine and addiction treatment. His expertise includes prevention, diagnosis, and management of adult diseases, as well as specialized care for individuals facing substance use disorders.
Dr. Cohen is committed to fostering open communication, ensuring his patients are fully informed and empowered to make confident decisions about their health and treatment options.
