Depression Symptoms

Quick Glance: Common Depression Symptoms

Some common symptoms of depression are as follows:

• Persistent sadness, low mood or feelings of emptiness

• Loss of interest or pleasure in activities previously enjoyed

• Fatigue or low energy

• Feelings of hopelessness, guilt, worthlessness or helplessness

• Difficulty concentrating, remembering or making decisions

• Changes in sleep, such as insomnia or sleeping too much

• Changes in appetite or unplanned weight loss or gain

• Thoughts of death or suicide

Depression symptoms can vary from person to person. Not everyone experiences all the symptoms, and their severity may also differ.

Depression Symptoms That Should Not Be Ignored

Some depression symptoms can significantly affect daily functioning or indicate a need for professional assessment. The table below highlights depression symptoms that should not be ignored:

These symptoms do not confirm depression on their own, but a healthcare professional should assess persistent or worsening changes.

Why Do Depression Symptoms Occur?

Depression symptoms can develop through a complex interaction of biological, psychological and social factors. Changes in brain processes involved in mood, motivation, sleep, appetite, concentration, and energy may contribute to a person's symptoms.

The body's stress-response system and other biological processes, including inflammatory pathways, may also be involved. However, there is no single hormone, brain chemical or blood test that can diagnose depression on its own. A healthcare professional considers the person's symptoms, their duration, severity and effect on daily life when assessing depression.

Depression Symptoms That Require Immediate Medical Attention

Depression symptoms that require urgent medical support are as follows:

• Suicidal thoughts or plans: Thoughts about ending one's life, particularly with an intention or plan to act, require immediate assessment.

• Suicide attempt or serious self-harm: Any suicide attempt or serious act of self-harm requires urgent medical care.

• Psychotic symptoms: Hallucinations or delusions can occur with severe depression and require urgent specialist assessment.

• Severe inability to care for oneself: Extreme depression that prevents a person from meeting basic needs or staying safe requires urgent professional assessment.

• Severe agitation with thoughts of self-harm: Extreme restlessness or agitation combined with suicidal thoughts can indicate an immediate safety concern.

If a person is in immediate danger of harming themselves or someone else, they should seek emergency medical care without delay.

Symptoms of Depression Based on Type

Depression can occur in different recognised forms and patterns. The table below summarises some of the types and their commonly associated symptoms:

Persistent depressive disorder generally involves less severe symptoms that last much longer than a typical depressive episode, while seasonal affective disorder follows a recurring seasonal pattern.

Symptoms of Depression in Men

The main symptoms of depression can occur in both men and women, including low mood, loss of interest, fatigue, sleep changes and difficulty concentrating. However, some men may experience or show symptoms such as irritability, anger, restlessness, social withdrawal or increased risk-taking behaviour.

Some men may also increase their use of alcohol or drugs when experiencing depression. Physical symptoms such as headaches, digestive problems or unexplained aches and pains may also occur.

Symptoms of Depression in Women

Women can experience depression symptoms like persistent sadness, loss of interest, fatigue, changes in sleep or appetite, feelings of guilt or hopelessness and difficulty concentrating.

Depression can also occur during pregnancy or after childbirth. This is known as perinatal depression and may involve persistent sadness, anxiety, fatigue, sleep problems, difficulty concentrating, feelings of guilt or worthlessness and difficulty carrying out daily activities.

Symptoms of Depression in Children

Depression in children may cause persistent sadness or irritability, loss of interest in usual activities, changes in sleep or appetite, tiredness and difficulty concentrating. Some children may also withdraw from others, show changes in behaviour or experience problems at school.

Can You Have Depression Without Symptoms?

Clinical depression cannot be diagnosed without symptoms. However, the early signs may be subtle, develop gradually or be mistaken for stress, tiredness or ordinary changes in mood.

Some people may not recognise changes such as low mood, loss of interest, fatigue, sleep problems or difficulty concentrating as possible symptoms of depression. A healthcare professional considers the symptoms, their duration, severity and effect on daily life when assessing depression.

When Can Depression Symptoms Become Life-Threatening?

The table below highlights depression symptoms or situations that may indicate a serious risk and require urgent medical or psychiatric support:

How are Depression Symptoms Diagnosed?

There is no single test that can diagnose depression. A healthcare professional assesses the symptoms, their duration, severity and effect on daily life, while other assessments may help rule out physical or mental health conditions with similar symptoms.

The table below outlines the main assessments that may be used to evaluate depressive symptoms:

For a depressive episode, symptoms generally occur for most of the day, nearly every day, for at least two weeks. The assessment also considers how much the symptoms affect daily functioning and whether another condition could explain them.