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What Are Mood Disorders? A Guide to Symptoms and Treatment

June 16th, 2025

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Let’s pretend that you’ve noticed your friend’s mood shifting for weeks—one moment they’re overwhelmed with sadness or frustration, the next they seem unusually energetic or irritable. You then notice they have been struggling to sleep, focus, eat, or make decisions. They’ve even mentioned experiencing frequent headaches or constant fatigue.

All of these symptoms can be signs that your friend might be experiencing symptoms of a mood disorder. The good news? With the right therapy and a strong support system, mood disorders are highly treatable—and your support can make a meaningful difference.

Keep reading to learn what mood disorders are, their symptoms, treatment, and more!

What are Mood Disorders?

Mood disorders are mental health conditions that primarily affect a person's emotional state, often causing prolonged periods of intense sadness, elevated mood, or mood swings ( depression, bipolar disorder, premenstrual dysphoric disorder, and disruptive mood dysregulation disorder). Hopkins Medicine describes mood disorders as “a type of mental health condition where there is a disconnect between actual life circumstances and the person's state of mind or feeling”.

Mood disorders can impact teens, children, and adults. Yet, mood disorder symptoms can look different for each age group. In particular, children with mood disorders can require a professional eye to actually diagnose, due to their inability to verbalize the emotions or changes they are experiencing.

Around 15% of children today are affected by mood disorders. Many symptoms of mood disorders may begin earlier in life, but mood disorders can be diagnosed at any time. More females than males are likely to be diagnosed with a mood disorder.

Mood disorders can make someone unable to function as they were once able to. This is due to the intense emotional periods someone suffering from mood disorders can experience. They may no longer have interest in things or experiences that once brought them joy. Many people find themselves unable to attend work, have fun with their friends, or show up to family gatherings.

How are Mood Disorders Different from Normal Mood Swings?

You might be wondering: how can I tell the difference between a typical mood swing and a mood disorder? Most people experience mood shifts from time to time—but mood disorders go beyond everyday ups and downs. A common mood shift that someone might mistake as a mood disorder like depression is sadness. Below are some key differences between feeling sad and experiencing a mood disorder like clinical depression:

Sadness

  • Likely triggered by a life event which could include: grief, fired from a job, loss of income, divorce, failing a school project or exam, not getting the job or opportunity you wanted
  • Relief can be experienced through tears or sharing with a trusted friend or love one
  • Passes with time
  • Ability to resume normal functioning as feeling passes

Clinical Depression

  • Lasts at least two weeks
  • Feelings of guilt/hopelessness/or that you are worthless
  • Irritability, fatigue, inability to sleep, or concentrate
  • Appetite changes and weight changes
  • Loss of interest in hobbies

Sadness can be a component of depression, but sadness usually is brief. Depression impacts relationships, performance at work or school, and overall ability to function normally.

Take our Free Depression Test (PHQ-9) to see if your symptoms could be signs of possible depression.

Common Types of Mood Disorders

There are four general categories of mood disorders: depressive disorders, bipolar disorders, premenstrual dysphoric disorder, and disruptive mood dysregulation disorder. Let’s take a look at some of what each of these categories entails below.

Depression

  • Postpartum depression: This depression commonly occurs during or after birth/pregnancy. After having a child, many birth givers experience hormone changes along with physical/emotional changes in their day to day that are linked to depressive symptoms.
  • Major depressive disorder: Persistent sadness and loss of interests in things that once were exciting or joyful to you. Must be present everyday most of the day for at least two weeks.
  • Persistent depressive disorder: This disorder is defined by depressive symptoms that are chronic, or last at least two years (for adults, 1 year for children or teens). It is common with this disorder for the severity of each symptom to decrease over time, but for chronic low mood to remain ongoing.
  • Seasonal affective disorder: This is depression in connection to seasons or times of the year. Most commonly, depressive symptoms begin in autumn or before winter, and tend to lessen/disappear when the weather becomes warm again in the summer or spring. In a small number of cases, the opposite may be true.
  • Depression with psychosis: This disorder includes all the symptoms of depression combined with hallucinations and delusions. Hallucinations include both seeing or hearing things that are not visible to other people. Delusions are defined by beliefs that are not based in reality but are unchangeable for the person who believes it.

Bipolar Disorder

  • Bipolar I disorder: Both symptoms of depression and mania may appear for those with bipolar I. Though mania is a requirement to diagnose bipolar I, depression is not required for this diagnosis.

What is mania? Mania is a period of elevated, or intense changes in mood, emotions, energy and activity. This must be notably different from your usual behavior and observed by others close to you. Must be notable for at least one week.

  • Bipolar II disorder: This disorder includes depression, but is notably different to Bipolar I as Bipolar II includes hypomania instead of mania.

What is hypomania? Hypomania is a less severe form of mania, for a shorter period of time but most be for at least four consecutive days. This does not significantly impact functioning (school or work).

  • Cyclothymia disorder: Chronically unstable mood. Those with this disorder experience hypomania and mild depression. This must be present for at least two years.
  • Unspecified bipolar/related disorders: This category is present for those who do not meet the requirements for other disorders but still have abnormal mood changes.

Premenstrual Dysphoric Disorder

This category is most commonly referred to as PMDD. PMDD occurs around 7 to 10 days before menstruation, and lessens in severity when menstruation begins. Symptoms that are common for many are anger, irritability, anxiety, depression, problems with concentration, and inability to sleep.

Disruptive Mood Dysregulation Disorder

Otherwise known as DMDD, this disorder is diagnosed exclusively for children. The symptoms for this disorder include angry outbursts and frustration that are not in proportion to the situation or event.

The symptoms must begin before the age of 10, and is not diagnosed for those before the age of six and after the age of 18. Some research points to around 2%-5% of children in the U.S. being impacted by DMDD, but this disorder is relatively new and not much is confirmed.

Types of Mood Disorders

What Causes Mood Disorders?

The cause of these mood disorders is largely unknown. Researchers have not been able to pinpoint one single cause for these disorders. Some potential causes include an imbalance of chemicals in a patient’s brain. This imbalance can be due to an illness, substances, medications, or other genetic factors. Many researchers also include intense life events and trauma as contributors to mood disorders.

Red Flags: When to Seek Help for Mood Disorders

There are many early warning signs that one can look out for when seeking help for a mood disorder. More often than not, these symptoms do not appear out of the blue. They can be present with growing intensity for weeks.

10 Red Flags for Mood Disorders:

  1. Apathy
  2. Sleep Change
  3. Appetite Change
  4. Social Withdrawal
  5. Mood Changes
  6. Drop in Functioning
  7. Increased Emotional Sensitivity
  8. Illogical Thinking
  9. Nervousness
  10. Changes at School or Work (thinking/distractions)

Diagnosis and Professional Support

In order to be diagnosed with a mood disorder, a good first step can be to talk to your psychiatrist, therapists, or psychiatric provider. They may ask you about a history of mental illness in your family, duration of symptoms or past occurrences, drug and alcohol use, and a physical exam to rule out any other illness possibly contributing to this condition. These clinicians may also ask you to fill out a questionnaire to get a better understanding of your symptoms.

These questionnaires include

  1. Hamilton Rating Scale for Depression
  2. Montgomery-Asberg Depression Rating Scale
  3. Young Mania Rating Scale
  4. PHQ-9 ( Take our free depression test PHQ-9)

Treatment Options for Mood Disorders

Psychotherapy can be specifically effective when it comes to treating mood disorders. Having the space to talk about your condition and symptoms with a mental health professional can increase functioning and overall mood. The most common styles of therapy used are Cognitive Behavioral Therapy and Interpersonal Therapy. These therapies aim to change the patients view of themselves and their situation to one more based in reality.

Another option for treatment can be antidepressants and other medication that aims to stabilize mood. Common types include: SSRIs (selective serotonin reuptake inhibitors), escitalopram, fluoxetine, paroxetine, sertraline and bupropion. Be sure to consult with a psychiatric provider about what option would be most beneficial for your specific symptoms.

Depending on the severity of the mood disorder, PHP/IOP programs could be a good fit. A PHP or partial hospitalization program is a mental health program that is structured and includes individual therapy, skill development, group sessions, medication management, and many other positive coping tools. IOP programs are similar, but are less intensive and require less of a time commitment.

If you’re interested in exploring PHP and IOP programs near you, Clarity Clinic offers the best PHP treatment and IOP treatment programs in all of IL. Click on the link below to learn more on how our virtual IOP, adult PHP/IOP, and adolescent PHP/IOP programs can help your mental health.

PHP/IOP Programs

Tips for Living with a Mood Disorder

Living with a mood disorder can be challenging, but with the right tools and support, it’s absolutely possible to lead a fulfilling and balanced life. Whether you’ve been recently diagnosed or managing symptoms for years, here are some practical tips to help you navigate day-to-day life and prioritize your mental well-being.

Tip 1: Practice self-care! This can include going for a walk, taking a bath, spending time with a loved one, or anything that promotes your personal joy or relaxation

Tip 2: Get good sleep. Mental health and sleep go hand and hand. Try your best to establish a solid sleep routine each night.

Tip 3: Connect with loved ones. Friends and family can be an important part of maintaining your mental health over the long term. Having a strong support system can be extremely beneficial to emotional regulation.

Tip 4: Engage daily in Mindfulness and Meditation. These coping tools have been shown to reduce stress and give the meditator a more positive outlook. You can find free meditations on Spotify, YouTube, pandora, apple music, wherever you listen. Your therapist can also help guide you on how to practice meditation and mindfulness.

Tip 5: Seek out professional mental health early. As soon you notice your symptoms increase or come back, be sure to reach out to a mental health professional. They can help you get back on track with a treatment plan that is right for you.

Psychiatry and Therapy Near You - Chicago

If you or someone you care about is struggling with a mood disorder, you don’t have to face it alone. Clarity Clinic offers expert psychiatry and therapy services in Chicago to help you manage symptoms and improve your quality of life. Whether you prefer in-person sessions or the convenience of online mental health care, our team is here to support you every step of the way.

We have mental health clinics located in the Loop, River North, Lakeview Belmont, Lakeview Broadway, Evanston, and Arlington Heights. Book a consultation today and find the best Chicago therapist and psychiatrist for your needs!

Book a Consultation

Related Readings:

Mood Disorders: Commonly Asked Questions

Is anxiety a mood disorder?

No, anxiety is not a mood disorder, it is classified as an anxiety disorder.

Is bipolar a mood disorder?

Yes, bipolar disorder is a type of mood disorder.

Is depression a mood disorder?

Yes, depression is one of the most common types of mood disorders.

Is PTSD a mood disorder?

No, PTSD is not a mood disorder, it is classified as a trauma- and stressor-related disorder.

Is borderline personality disorder a mood disorder​

No, BPD is not a mood disorder, it is a personality disorder, though it involves mood instability.

Is schizophrenia a mood disorder?

No, schizophrenia is not a mood disorder, it is a psychotic disorder.

What is disruptive mood dysregulation disorder​?

Disruptive Mood Dysregulation Disorder (DMDD) is a childhood mental health condition characterized by chronic irritability, frequent temper outbursts, and an angry or irritable mood most of the day, nearly every day. It typically affects children between the ages of 6 and 18.

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