depression on one side

Overview

Depression on one side is not a medical term. People use this phrase to mean two different things: having a family history of depression on one side of your family, or feeling depressed after a brain injury, such as a stroke, that affects one side of the brain. In both situations, the depression itself is a real and treatable health condition.

Yes. Depression affects about 1 in 6 people at some point in life. After a stroke, depression affects about 1 in 3 survivors. Having a family member with depression is also common and does not mean you are doomed to have it.

Anyone can be affected by depression, regardless of age, gender, or background. It can run in families, and it can affect people after neurological conditions like stroke or brain injury.

Symptoms

Common symptoms

• Feeling sad, empty, or hopeless most of the day
• Losing interest in hobbies or activities you used to enjoy
• Feeling tired or having no energy
• Sleeping too little or too much
• Changes in appetite or weight
• Difficulty concentrating or making decisions
• Feeling worthless or guilty
• Feeling restless or slowed down

Symptoms in children

• Irritability or moodiness
• Clinginess or fear of being alone
• Poor performance at school
• Physical complaints like stomach aches or headaches
• Withdrawing from friends or activities

Symptoms in older adults

• Memory problems
• Loss of interest in social activities
• Unexplained physical pain or fatigue
• Difficulty sleeping or waking early
• Feelings of hopelessness or worthlessness
• Focusing on death or dying

Causes

Main causes

• Changes in brain chemicals or activity
• Genetics and family history on either side
• Difficult life events such as loss, stress, trauma, or abuse
• Medical conditions such as stroke, brain injury, hormonal changes, or chronic pain

Risk factors

• Having a parent, sibling, or child with depression
• Previously having depression or other mental health issues
• Chronic physical illness
• Lack of social support or isolation
• Alcohol or drug misuse

When to see a doctor

See a doctor urgently if:

• If you have thoughts of harming yourself or suicide
• If you are unable to look after yourself or basic needs

Book a routine appointment if:

• If you have felt down, low, or hopeless for more than two weeks
• If depression is affecting your work, school, or relationships
• If you are worried about your family history of depression
• If you have had a stroke and notice persistent low mood

Diagnosis

A healthcare professional will talk with you about your symptoms, mood, medical history, and any family history of depression. They may ask you to fill out a short questionnaire. There is no single blood test for depression, but blood tests can help rule out other causes like thyroid conditions.

Tests that may be done

• Mood questionnaires (for example, PHQ-9)
• Blood tests to check thyroid, hormone, or vitamin levels
• A detailed mental health assessment by a doctor or psychiatrist

What to expect at your appointment

Your appointment will feel like a conversation, not an exam. You'll be asked about your feelings, sleep, appetite, energy, and how you are coping. Try to be open and honest — that helps you get the right support.

Treatment

Depression is very treatable. Most people feel better with the right combination of support, talking therapies, lifestyle changes, and sometimes medication. You are in control of your care and should be included in every decision.

Self-care at home

• Keep a regular sleep and wake schedule
• Break tasks into small, manageable steps
• Stay connected with supportive friends or family
• Set one small goal each day
• Try relaxation techniques like deep breathing or mindfulness

Medical treatments

Treatment approaches depend on your situation and what you prefer. Talking therapies, such as cognitive behavioural therapy (CBT), help you identify and change unhelpful thought patterns. Some people benefit from a course of antidepressant medication, but it is always your choice to discuss this with your doctor. Never stop or change any treatment without speaking with your healthcare provider first.

When is surgery considered?

Surgery is not a treatment for depression itself. If your depression is related to a brain injury or stroke, treating that underlying condition may be part of your care plan.

Living with this condition

Living with depression means taking things one day at a time. Some days will be harder than others. Try to be gentle with yourself, keep a simple routine, and celebrate small steps forward.

Lifestyle tips

• Go to bed and wake up at similar times each day
• Get some gentle movement, like a short walk, most days
• Eat regular, balanced meals
• Limit alcohol and caffeine, especially in the evening
• Avoid using drugs or alcohol to cope

Diet and exercise

Eating regular, balanced meals can help keep your mood stable. Exercise releases natural chemicals in the brain that improve mood. Start small — five to ten minutes of activity is a great beginning. Do not push yourself too hard.

Mental health and emotional wellbeing

Depression can make you feel guilty, hopeless, or disconnected from others. These feelings are symptoms of the condition, not facts about you. With treatment, they can improve. Remember that your worth is not measured by your productivity or happiness.

Prevention

You cannot always prevent depression, especially if it runs in your family or follows a medical event like a stroke. However, you can lower your risk by staying active, managing stress, building strong relationships, and getting support early if symptoms appear.

Vaccines

There is no vaccine for depression.

Screening programmes

If you have had depression before or have a strong family history, your doctor may suggest regular check-ins to notice changes early. You can also ask for a mental health check-up even when you have no symptoms.

Complications

If left untreated

• Depression can last for years and get harder to treat
• It can damage relationships and work performance
• It can lead to serious physical health problems from poor self-care
• It increases the risk of suicidal thoughts and suicide

Long-term outlook

Depression is one of the most treatable mental health conditions. With the right support — whether through talking therapies, medications, lifestyle changes, or a combination — most people improve significantly. Recovery takes time and patience, but it is absolutely possible. You are not alone, and help is always available.

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