KEY TAKEAWAYS
- Depression can affect mood, thoughts, physical health, and daily functioning.
- Common signs include low mood, loss of interest, fatigue, sleep or appetite changes, and difficulty concentrating.
- Depression does not always look obvious and can occur even when someone appears to be coping well.
- If symptoms persist or interfere with daily life, a professional assessment can help identify the right support.
It starts as a heavy feeling somewhere in the body.
Perhaps a weight has settled on your chest, a strange ache moves through your belly, or an annoying pain persists in your back.
Then you find yourself unable to do the things you usually enjoy. Your favourite activities feel like a chore, instead of a source of joy and pleasure. You either sleep too much or too little. You sometimes go unshowered for days. You skip meals and make excuses to avoid meeting up with friends.
At this point, you wonder: Am I depressed?
The reality is that depression doesn’t look the way people expect it to be. It may involve persistent feelings of sadness over time. It can also show up as changes in appetite or sleep, loss of interest, difficulty concentrating, low energy, feelings of worthlessness or guilt, or sudden changes in how you function at work, school, or home.
Because everyone is different, the mask of depression can show up differently. Some people may seem like they’re coping well while experiencing significant difficulties internally, on their own, without telling anyone else. Others may notice physical or behavioural changes rather than recognizing them as potential signs of depression.
So what does depression look like in clinical terms, and when is the right time to seek an assessment?
What is Depression?
There is an official medical definition of what depression is.
According to the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), depression is a common psychiatric disorder that can be called by its clinical name, Major Depressive Disorder (MDD). This psychiatric disorder is characterised by distinct episodes of persistent sadness or loss of interest accompanied by cognitive and somatic symptoms.
This means that depression can show up in the way you think (cognitive symptoms) while also involving physical sensations (somatic symptoms).
Your thought-based patterns, mental processes, and emotional reactions add up to what’s happening in your head. Meanwhile, you could experience muscle tension, heart palpitations or a rapid heartbeat, fatigue, dizziness, and localised pain. As Bessel van der Kolk wrote in his book, your body remembers; your body keeps the score.
What are the Signs and Symptoms of Depression?
Healthcare professionals have specific criteria to diagnose depression. Its signs and symptoms can appear at varying frequencies and intensities. It often involves a combination of emotional, cognitive, physical, and behavioural symptoms.
Common signs and symptoms of depression may include:
- Persistent sadness or a low mood
- Loss of interest in activities that were previously enjoyable (also known as anhedonia)
- Sleeping significantly more or less than usual
- Feeling tired or lacking energy
- Changes in appetite
Significant weight loss or weight gain - Difficulty concentrating, thinking, or making decisions
- Withdrawing from social activities or relationships
- Feeling worthless, guilty or excessively self-critical
- Feeling restless, slowed down, or unusually agitated.
- Having difficulty keeping up with usual responsibilities
- Recurrent thoughts about death, dying, or suicide
Not all of these symptoms occur at the same time, although some may. For medical professionals, the pattern, duration, and impact of symptoms are crucial when assessing whether a person may be experiencing depression.
How Can Depression Affect Everyday Life?
Depression can show up in little ways in your daily life.
You may put off tasks you previously thought were manageable. You forget things or find it difficult to concentrate. All your everyday responsibilities begin to feel like Herculean tasks.
You may also experience any of the following situations:
- You struggle to get started on routine tasks.
- You have difficulty concentrating on conversations.
- You sleep through much of the day or struggle to sleep at night.
- You stop responding to messages or avoid social situations.
- You find it harder to make decisions.
- You have difficulty maintaining usual routines.
- You feel that even small responsibilities are overwhelming.
These changes, no matter how inconsequential they appear from the outside, can affect work, studies, relationships, and personal responsibilities.
Can Depression Cause Physical Symptoms?
Yes. Depression can involve physical symptoms as well as emotional ones.
Alongside changes in sleep, appetite, energy, or activity levels, signs of physical discomfort can occur alongside depression.
The first sign that something is wrong may not even be feeling sad. It may be persistent fatigue, disrupted sleep, changes in appetite or difficulty functioning as usual.
This is why a broader clinical assessment can be useful when symptoms are persistent or affecting your everyday life.
“But I Look Well. Do I Still Have Depression?”
Your appearance does not necessarily mean that you are not experiencing significant emotional difficulties.
Most people continue doing what they do, including studying, working, socialising, or taking care of others, while struggling with symptoms of depression internally.
Therefore, depression can be difficult to recognize through appearances alone.
Rather than focusing on whether you “look depressed”, it may be more useful to consider whether there have been persistent changes in your mood, interest, energy, sleep, appetite, concentration or everyday functioning.
How Is Depression Diagnosed?
A healthcare professional may conduct a clinical assessment that considers the following:
- Current symptoms
- How long the symptoms have been present
- How frequently they occur
- Their severity and impact on everyday life
- Medical and mental health history
- Family history
- Sleep, appetite and other physical changes
- Other circumstances that may be affecting mood or functioning
Doctors may use standardised questionnaires during an assessment. These help them understand your symptoms and how serious they are, but a questionnaire alone can’t diagnose depression.
Other conditions can cause symptoms similar to depression. That’s why doctors look at the bigger picture instead of focusing on just one symptom or test result.
When Should I Talk to a Doctor About Depression?
It’s appropriate to seek professional help if changes in your mood, interests, sleep, appetite, energy, focus, or daily life last and start to affect you in a big way.
You don’t have to be sure you have depression before talking to a healthcare professional.
If you have thoughts of suicide or self-harm, get professional help right away instead of trying to handle it alone.
What Happens During an Assessment for Depression?
A depression assessment usually involves a conversation about what you have been experiencing.
You may be asked about your mood, sleep, appetite, energy levels, concentration, interests, thoughts, and everyday functioning.
You may also be asked questions such as:
- When did you first notice these changes?
- How often do they occur?
- Have they affected your work or studies?
- Have your relationships or social activities changed?
- How have you been sleeping?
- Have you noticed changes in appetite or energy?
- Have you experienced feelings of guilt, worthlessness, or hopelessness?
- Have you had thoughts about death or suicide?
- Have you experienced similar difficulties previously?
The goal isn’t just to count symptoms, but to understand the bigger picture and how it’s affecting your life.
What Happens During Treatment for Depression?
Treatment for depression depends on the person, their symptoms, and what the clinician finds during the assessment.
Depending on your situation, treatment might include therapy, medication, changes in lifestyle or behaviour, or a mix of these.
Therapy can help you work through emotional challenges and unhelpful thinking or behaviour patterns. Doctors may also suggest medication if it’s appropriate for you.
There isn’t one treatment that works for everyone. A healthcare professional can talk with you about your options, including the benefits, limitations, and possible side effects, based on your needs.
The aim of treatment is to help with the problems that are affecting your well-being and daily life.
What If It Turns Out I Do Not Have Depression?
An assessment can still be useful.
Symptoms like low energy, trouble focusing, poor sleep, or lack of motivation can have many causes. Anxiety, long-term stress, sleep problems, other mental health issues, or medical conditions can also affect how you feel and function.
So, an assessment isn’t just about confirming or ruling out depression. It’s about understanding what’s causing your difficulties and finding the right support.
Consult a Mental Health Professional
Depression affects more than just your emotions. It can change your sleep, appetite, energy, focus, relationships, and how you handle daily tasks.
Having one or two symptoms doesn’t always mean you have depression. What matters is how long they last, how severe they are, and how much they affect your life.
If you’ve noticed ongoing changes in your mood or how you function, a professional assessment can help you figure out what’s going on and what options might help.
Private Space Medical offers psychiatric and psychological services for adults, youths and children in Singapore. A clinician can talk with you about your concerns, assess your symptoms, and suggest the appropriate next steps for your situation.
Frequently Asked Questions About Depression
What are the most common symptoms of depression?
Some common symptoms are feeling down for a long time, losing interest in things you used to enjoy, having low energy, changes in sleep or appetite, trouble focusing, feeling guilty or worthless, feeling restless or moving more slowly, and having thoughts about death or suicide.
Can you have depression without feeling sad?
Yes. Depression does not always show up as sadness. Some people notice they lose interest in things, feel tired, have trouble sleeping, can’t focus, or their appetite and daily routines change. Doctors look at the whole pattern of symptoms, not just one.
How long do depression symptoms last?
How long symptoms last can be different for everyone. If symptoms keep going and make daily life hard, it’s important to talk to a healthcare professional. Doctors look at how long and how often symptoms happen when they assess depression.
Can stress cause symptoms similar to depression?
Yes. Ongoing or major stress can change your sleep, focus, energy, and mood. Stress and depression can happen at the same time, so if problems last or make daily life hard, it can help to get a professional assessment.
Can depression be treated?
Depression can be treated with help from professionals. Treatment might include talking therapy, medication, changes in habits, or a mix of these. The best approach depends on each person’s needs.
Is an online depression test enough to diagnose depression?
No. An online quiz can help you think about your symptoms or decide if you want more support, but it is not the same as a real assessment. A healthcare professional will look at your symptoms, history, daily life, and other possible causes before making a diagnosis.
When should I seek help for depression?
Talk to a healthcare professional if changes in your mood, interests, sleep, appetite, energy, focus, or daily life last a long time or make things hard. If you have thoughts of suicide or self-harm, get help right away.
