Depression: Recognising the Signs

How to recognise depression, understand what it can look like and know when to seek help

Everyone feels sad, flat or discouraged at times.

These feelings may follow disappointment, conflict, illness, grief or a difficult period in life. They often improve as circumstances change or support becomes available.

Depression is different. It involves persistent changes in mood, motivation, thinking or physical functioning that begin affecting daily life. A person may feel deeply sad, but depression can also appear as irritability, numbness, exhaustion or loss of interest rather than obvious sadness.

Depression is common, serious and treatable. It is not a weakness, a failure of gratitude or something a person should simply “snap out of”.

What is depression?

Depression is a mental-health condition that affects how a person feels, thinks, behaves and functions.

A typical depressive episode involves low mood, reduced enjoyment or other symptoms on most days for at least two weeks. The symptoms cause distress or interfere with work, study, relationships, self-care or everyday responsibilities.

The word “depressed” is often used casually to describe feeling disappointed or unhappy. Clinical depression is more persistent and has a broader effect on the person’s life.

A person does not need to have every possible symptom before depression deserves attention.

Common signs and symptoms

Depression can affect emotions, thoughts, behaviour and the body.

Changes in mood

A person may experience:

• Persistent sadness or low mood
• Feeling empty, numb or emotionally disconnected
• Irritability, anger or frustration
• Hopelessness
• Feeling overwhelmed
• Frequent tearfulness
• Loss of confidence

Loss of interest or pleasure

Activities that normally matter may begin feeling pointless or exhausting.

A person may stop enjoying:

• Time with family or friends
• Hobbies
• Exercise
• Sex
• Work or study
• Food
• Plans for the future

Loss of interest or pleasure is one of the central features of depression.

Changes in thinking

Depression may cause:

• Poor concentration
• Difficulty making decisions
• Slower thinking
• Forgetfulness
• Harsh self-criticism
• Excessive guilt
• Feeling worthless
• Believing that nothing will improve
• Thoughts of death or suicide

Depression can make negative thoughts feel completely convincing. That does not mean they are accurate.

Physical symptoms

Possible physical changes include:

• Poor or excessive sleep
• Waking very early
• Fatigue
• Reduced energy
• Changes in appetite or weight
• Slowed movement
• Restlessness
• Headaches
• Muscle pain
• Digestive symptoms
• Reduced sexual interest

Physical symptoms may be particularly prominent in some people, including older adults and men. Persistent physical complaints should still be assessed rather than automatically attributed to depression.

Depression does not always look like sadness

Some people continue working, parenting and appearing socially engaged while feeling profoundly unwell internally.

Others mainly show:

• Irritability
• Anger
• Withdrawal
• Increased alcohol or drug use
• Risk-taking
• Overworking
• Loss of patience
• Physical complaints
• Reduced self-care

In men, depression may be expressed through anger, sleep disturbance, substance use or loss of interest rather than openly discussing sadness.

Children, teenagers, older adults and people from different cultural backgrounds may also describe or show depression differently.

Grief and depression are not the same

Grief is a natural response to loss.

It can involve intense sadness, poor sleep, reduced appetite and difficulty concentrating. Grief often comes in waves and may coexist with positive memories, connection or moments of relief.

Depression tends to be more persistent and may involve pervasive hopelessness, worthlessness, loss of pleasure and a negative view of oneself or the future.

Grief and depression can occur together. There is no rigid timetable after which grief becomes abnormal. Support is appropriate whenever distress is severe, prolonged or affecting safety and function.

What can contribute to depression?

Depression rarely has one single cause.

Contributing factors may include:

• Genetic vulnerability
• Previous episodes of depression
• Trauma
• Chronic stress
• Grief or major life changes
• Relationship problems
• Loneliness
• Chronic illness or pain
• Pregnancy or the postnatal period
• Menopause
• Sleep disturbance
• Alcohol or other drug use
• Certain medicines
• Financial or housing pressure
• Discrimination or social disadvantage

Sometimes depression develops without an obvious trigger.

Having a difficult life circumstance does not mean symptoms are “only situational” or do not deserve treatment.

Medical conditions can resemble depression

Several health problems can cause fatigue, poor concentration, sleep disturbance or low motivation.

Depending on the situation, your GP may consider:

• Thyroid disease
• Anaemia
• Vitamin deficiencies
• Sleep apnoea
• Chronic infection
• Neurological conditions
• Hormonal changes
• Medicine adverse effects
• Alcohol or other substance use

Blood tests do not diagnose depression, but they may help identify contributing or alternative medical problems.

Could it be bipolar disorder?

Some people who experience depressive episodes also have periods of abnormally elevated or irritable mood.

Possible signs of mania or hypomania include:

• Needing very little sleep without feeling tired
• Unusually high energy
• Rapid speech
• Racing thoughts
• Inflated confidence
• Increased activity
• Impulsive spending
• Sexual risk-taking
• Reckless decisions

This information matters because treatment may differ from treatment for depression alone.

Tell your GP about any previous periods like this, even if they felt productive or enjoyable at the time.

When should you see your GP?

Arrange an appointment when symptoms:

• Last for two weeks or more
• Affect work, study, relationships or self-care
• Cause significant distress
• Keep returning
• Include increased alcohol or drug use
• Occur during pregnancy or after childbirth
• Are accompanied by severe anxiety
• Include thoughts that life is not worth living

Book a longer appointment if possible. It may help to tell the receptionist that you want to discuss mental health.

What happens during an assessment?

Your GP may ask about:

• Mood and enjoyment
• Sleep and appetite
• Energy and concentration
• Work and relationships
• Anxiety
• Alcohol and other substances
• Medical conditions and medicines
• Previous episodes
• Family history
• Thoughts of self-harm or suicide

Some questions may feel direct, particularly those about suicide. They are asked to understand safety and arrange the right support.

Your GP may use a questionnaire to help assess symptom severity. A questionnaire supports the assessment but does not replace a clinical conversation.

Psychological treatment

Psychological therapies are effective treatments for depression.

Common approaches include:

• Cognitive behavioural therapy
• Interpersonal therapy
• Behavioural activation
• Problem-solving therapy
• Mindfulness-based approaches
• Supportive counselling

Behavioural activation helps a person gradually resume useful or meaningful activities rather than waiting to feel motivated first.

Treatment may be provided face to face, by telehealth or through a structured online program.

A GP mental health treatment plan may help eligible patients access subsidised treatment and identify agreed goals and support options.

Antidepressant medicines

Antidepressants may be useful for moderate or severe depression, persistent symptoms, recurrent episodes or when psychological treatment alone has not been enough.

They do not provide instant relief.

Some improvement may begin after two to four weeks, while the full effect can take six to eight weeks.

Possible adverse effects vary by medicine and may include:

• Nausea
• Headache
• Sleep changes
• Sexual difficulties
• Restlessness
• Emotional blunting
• Changes in appetite

The first medicine is not always the right one. Your GP may need to adjust the dose or consider another option.

Do not stop an antidepressant suddenly without medical advice. Abrupt cessation can cause withdrawal symptoms and increase the risk of relapse.

Lifestyle measures can support recovery

Lifestyle changes are not a substitute for necessary treatment, but they can form part of recovery.

Helpful steps may include:

• Regular sleep and wake times
• Gentle, regular physical activity
• Regular meals
• Reducing alcohol and drug use
• Spending time outdoors
• Maintaining contact with supportive people
• Breaking tasks into small steps
• Reintroducing meaningful activities

Depression often tells a person to withdraw and wait until motivation returns. In practice, small actions may need to come before motivation.

Recovery is rarely perfectly linear

Symptoms may improve gradually rather than disappearing all at once.

Early signs of progress may include:

• Getting out of bed more easily
• Completing basic tasks
• Sleeping more regularly
• Feeling less overwhelmed
• Reconnecting with someone
• Brief moments of enjoyment
• Thinking more clearly

A temporary setback does not mean treatment has failed.

Follow-up matters, particularly after starting or changing medicine, during major life stress, or when suicidal thoughts have occurred.

Supporting someone with depression

You do not need to solve the problem for them.

Helpful responses include:

• Listening without judgement
• Taking their symptoms seriously
• Asking what support would help
• Offering practical assistance
• Encouraging a GP appointment
• Helping them attend if they agree
• Staying in contact
• Asking directly about suicide when concerned

Avoid saying:

• “Cheer up.”
• “Other people have it worse.”
• “You have nothing to be depressed about.”
• “Just think positively.”

Directly asking whether someone is thinking about suicide does not create the idea. It may make it easier for them to tell you what is happening.

When to seek urgent help

Take suicidal thoughts seriously.

Call 000 if someone is in immediate danger, has attempted suicide, cannot stay safe or requires urgent medical attention.

Lifeline provides free, confidential crisis support 24 hours a day by:

• Phone: 13 11 14
• Text: 0477 13 11 14
• Online chat

When immediate danger is not present but support is needed, contact a GP, local mental-health service or Medicare Mental Health on 1800 595 212 during weekday service hours.

Do not leave a person alone when you believe they are at immediate risk.

Start with one change

Choose one manageable action:

• Tell someone you trust how you have been feeling
• Book a longer GP appointment
• Get dressed and step outside
• Eat one regular meal
• Take a ten-minute walk
• Reduce alcohol
• Reply to one message
• Save crisis numbers in your phone

When depression makes everything feel impossible, the next step should be small enough to do today.

The bottom line

Depression is more than temporary sadness.

It may involve persistent low mood, loss of interest, irritability, fatigue, sleep disturbance, poor concentration, guilt, hopelessness or physical symptoms lasting at least two weeks.

Depression can affect anyone and may not be obvious from the outside. Effective treatments include psychological therapy, lifestyle support and, when appropriate, antidepressant medicine.

Seek help early, particularly when symptoms affect daily life or include thoughts of suicide. Recovery is possible, even when depression makes that difficult to believe.