Introduction

You have surely experienced mood swings so far in your lifetime, just like everyone else. Emotional changes are a normal part of life and do not necessarily mean that you have mental health concerns. Then what are mood swings? Is it normal to experience them? Do they ever become a trigger for something serious? Let’s simply understand it with an open mindset.

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What Are Mood Swings?

The term "Mood Swings" indicates that there are changes that take place in the emotions of a particular individual. These changes can consist of changes from one emotion to another, including happiness, sadness, frustration, anxiety, and other ones. The frequency, intensity, cause, and duration of these changes may differ significantly from one person to another.

Sometimes, changes in mood can be explained by the presence of a particular situation or experience. Our mood can be influenced by different factors, including stress, lack of sleep, problems in relationships, major life events, and some physical and hormonal changes (WHO, 2026).

In some cases, however, it is necessary to pay attention to these changes if they are very intense, prolonged, uncontrollable, too frequent, or interfere with one's everyday activities. Mood swings can occur with people suffering from various mental disorders (depression, bipolar disorder, cyclothymia, anxiety disorders, or substance use disorders), physical disorders, or under the influence of medications.

The point is that the changes in the mood do not necessarily indicate the existence of some mood disorder.

What Normal Mood Changes Look Like:

Occur in response to understandable circumstances
Are relatively temporary
They do not substantially interfere with everyday functioning
They improve when the triggering situation changes or adequate rest and support are obtained

More severe mood changes can also occur frequently, intensely, over a long period of time, and/or concurrently with changes in sleep patterns, behavior, energy levels, cognition, and functioning.

This aspect is particularly important in the context of explaining bipolar disorder. This mental disorder consists of episodes of mania, hypomania, and/or depression with mood and functioning changes. These episodes are different from normal mood changes that take place in people’s life (NIMH, 2024).

What are symptoms of mood swings?

As you would have understood so far, mood swings themselves are not a diagnosis, thus the symptoms can vary depending on the underlying issue. Possible signs can be as follows:

Sudden emotional changes
Increased irritability or anger
Unexpected emotional ups and downs
Excessive anxiousness or worry
Unusual behavior changes
Difficulty explaining the mood
Feeling unusually low and sadness
Substantial changes in daily life functioning due to the same

What causes mood swings?

They can occur due to various causes and several of them might occur at the same time

Stress and Significant Life Events

Stress is a natural reaction to tough situations. Nevertheless, too much or chronic stress can have negative effects on both psychological and physical health. Stress may cause irritability, anxiety, concentration difficulties, sleep disorders, and changes in appetite (WHO, 2026).

Other significant life events such as loss, conflicts with family and friends, pressures at school or work, problems with money, being ill, and other life transitions may also negatively impact one's mood for some time.

Lack of Sleep

Sleep is vital in terms of emotional regulation. Getting not enough rest or low-quality sleep on a regular basis makes it harder to deal with stress.

For individuals suffering from specific mental health problems, sleep changes may be another aspect of the condition. For instance, the need for less sleep can be observed during a manic phase in bipolar disorder (NIMH, 2024a).

Changes in diet

The inconsistency in meals and improper nutrition may cause tiredness or physical sickness, thus affecting one's emotional condition. Good nutrition is beneficial for one's health; nonetheless, dietary changes on their own cannot be considered a treatment for a mental illness.

Trauma

A person's reaction to an episode of trauma may last long after the occurrence of such a situation. There is a range of symptoms that may appear after the person goes through trauma, such as anxiety, irritability, emotional distress, insomnia, avoidance, etc. Nevertheless, people's reactions to trauma differ; therefore, not all the persons going through trauma suffer from mental illness.

Substance use

Alcohol and drug intoxication may affect one's emotions, sleep, judgment, behavior, etc. Moreover, one may experience emotional changes during the withdrawal process. Thus, reducing substance abuse is essential for mental well-being (WHO, 2026).

Physical Health Problems

There are some health problems which could create signs like those of psychological problems.

One example would be thyroid diseases. Hyperthyroidism can be linked with anxiety, irritability, and changes in mood, whereas thyroid disease as such could cause changes in mood and energy (MedlinePlus, 2024). This is one reason why mood changes may require evaluation by a physician.

Mental Health Problems

Changes in mood may be observed with depression, bipolar disorder, cyclothymia, anxiety disorders, disorders due to trauma, and other mental health problems. Nevertheless, occurrence of mood swings on its own would not lead to diagnosis of any of these problems.

Hormone Fluctuations

Hormonal changes can influence one’s mood in some cases. Emotional troubles may occur in relation to menstrual cycle, pregnancy, post-partum period, perimenopause, and menopause. In fact, PMS is associated with irritability, mood swings, and depression which happen during the week before menstruation (NHS, 2025a).

Medications

Some medications and other products are capable of affecting one’s mood. Everyone who suffers from such mood changes due to medication being prescribed, discontinued, or changed should consult a doctor about it. It is not recommended to discontinue using prescribed medications abruptly

Can Mood Disorders Cause Mood Swings?

It is important to understand that mood swings do not automatically mean a person has a mood disorder. There are various mental health conditions that talk about mood swings as one of the symptoms in their diagnostic criteria (like depression, bipolar disorder, anxiety disorders, trauma related disorders, etc.).

However, to make a diagnosis a complete clinical evaluation is required rather than just focusing on mood swings as a qualifier for diagnosis. It is also essential to understand the situation in which it got triggered, how long it has been since the person has experienced them, and how much it impacts their daily functioning for clarity. Occasional mood changes do not mean a person has a mood disorder.

What Are the Causes of Mood Swings in Girls?

Like any person, girls and women can be predisposed to experience mood swings for various reasons including psychological, social, environmental and biological causes.

Females experience more hormonal changes on a weekly basis based on their phases of their menstrual cycle. There are also different reasons like premenstrual syndrome, premenstrual dysphoric disorder, pregnancy, and menopause, etc., that are specific to female body which can disrupt their mood and cause changes in it.

Mood changes might also be caused by stress, sleep deprivation, relationship issues, work-related problems and other factors for both females and males.

How to Avoid Mood Swings?

Avoiding all emotions is unrealistic and psychologically unhealthy. Promoting moods and avoiding unnecessary provoking factors is the aim.

Keep regular sleep routines
Adhere to healthy eating habits
Exercise regularly
Managing your stress
Keep company of people with whom you can share thoughts and feelings
Identify your triggers
Abstain from harmful substance use

All above-mentioned ways can help improve well-being; however please note that they cannot be regarded as an alternative to treatment, for existing health problems.

How to Control Mood Swings?

There is no single way to stop mood swings, as there is no one right method to deal with this problem, depending on its causes.

For example, it may be helpful to think about:

When did it start?
How often does it happen?
How long does it last?
What happens right before these mood swings?
Is your sleep, your appetite, your energy, or your behavior changing?
Does it have a menstrual cycle pattern?

Health care professionals can evaluate psychological and physical components.

The therapy will help individuals identify emotional cues, develop coping skills, manage stress, and resolve psychological problems. The methods used during psychotherapy may differ based on the type of disorder and patient's requirements (NIMH, 2025). A healthy way of living can complement the treatment; however, it cannot replace proper medical or psychological help.

How to Manage Mood Swings?

There is no specific method to deal with mood swings because their causes may vary.

The solutions can include:

Medical examination: For identifying the physical factors that lead to the mood swing disorder
Psychotherapy: To deal with emotional problems, such as stress, anxiety, depression, trauma, certain behavior
Lifestyle changes: Such as proper sleep, exercise, dieting, managing stress, and changing substance abuse
Social support: By the help of trusted family members, friends, people in a community or elsewhere

In case of mood swings due to the premenstrual syndrome, for example, the treatment will be different from the treatment of bipolar disorders mood swings. In the case of bipolar disorder mood swings, it may include medication and psychotherapy, depending on a particular individual.

When Should You Consult Professionals About Your Mood Swings?

Seek help from professionals when:

Mood changes occur frequently or are extremely strong
They affect your ability to function daily
They affect work, school, or personal relationships
They make emotions harder to control
They are chronic or recurring
Changes occur in sleep, energy, appetite, and behavior
Engaging in risk behaviors, high energy levels and impulsivity
Alcohol or drug use is involved in coping with emotional problems
Depression, hopelessness, and withdrawal feelings are present

According to NIMH, professional help should be sought when symptoms are very strong, persistent, or interfering with everyday activities (NIMH, 2025).

Threats to one’s own life or suicide attempts should be taken seriously and addressed immediately. A person thinking about such things should get help from professionals and involve another person who can be trusted rather than trying to cope with it independently.

Conclusion

It is normal for humans to experience mood swings, however, the implications of them vary based on how often, how intensely, how long they last and the effects they have on a person’s daily functioning.

Various factors such as stress, trouble sleeping, changes in hormones, medical conditions, medications, drugs, psychological trauma and other mental health issues could lead to changes in moods. However, it is not necessary that everyone who occasionally has shifts in mood suffers from a psychiatric problem. Instead of the question “Why am I so moody?”, it could be beneficial to ask: “What could affect my mood and how can I get help?”

Above all, being emotionally unstable does not make a person weak. Psychological problems need to be approached just as physically related issues.

References:

MedlinePlus. (2024). Hyperthyroidism. U.S. National Library of Medicine.
https://medlineplus.gov/hyperthyroidism.html

National Institute of Mental Health. (2024a). Bipolar disorder. U.S. Department of Health and Human Services, National Institutes of Health.
https://www.nimh.nih.gov/health/publications/bipolar-disorder

National Institute of Mental Health. (2024b). Depression. U.S. Department of Health and Human Services, National Institutes of Health.
https://www.nimh.nih.gov/health/publications/depression

National Institute of Mental Health. (2025). My mental health: Do I need help? U.S. Department of Health and Human Services, National Institutes of Health.
https://www.nimh.nih.gov/health/publications/my-mental-health-do-i-need-help

National Institute of Mental Health. (2025). Psychotherapies. U.S. Department of Health and Human Services, National Institutes of Health.
https://www.nimh.nih.gov/health/topics/psychotherapies

World Health Organization. (2026). Stress. https://www.who.int/news-room/questions-and-answers/item/stress/