Depression · winter pattern

Seasonal affective disorder: symptoms, light therapy and tips

Every winter gloomy, exhausted and not enjoying anything? Read how winter depression is recognised, what light therapy entails and what other help is available.

Winter depression is a depression with a recurring seasonal pattern, usually with symptoms in the autumn or winter and recovery in the spring. You don't have to wait for it to lighten on its own: there are treatments and practical steps that can help.

Zorgfuik provides general information and does not make a diagnosis. Discuss personal symptoms, treatment and medication with a qualified healthcare provider.

Sources checked for August 31, 2026. General information for adults; no personal treatment advice.

Winter blues or winter depression: what's the difference?

Winter blues

You feel less energetic or more gloomy in dark months. That can be annoying, without there being a depressive episode. Milder symptoms also deserve attention if they persist or limit your life.

A winter depression

There are depressive episodes with a recurring winter pattern. Sadness or loss of pleasure goes together with other symptoms and hinders, for example, your work, relationships or self-care. It's more than hating dark weather.

You may suffer from concentration problems, guilt, irritability and little initiative. The winter pattern regularly requires extra sleep, difficulty waking up and a greater appetite for carbohydrate-rich food. But not everyone has these characteristics: poor sleep or little appetite does not rule out depression.

A depressive episode usually lasts at least two weeks. Severe symptoms or thoughts of suicide are always a reason to seek help sooner. Also compare the general symptoms of depression.

Sources: Amsterdam UMC and NIMH: seasonal depression.

How is winter depression diagnosed?

The doctor will discuss your symptoms, their duration and what is no longer possible on a daily basis. When did they start, when did you recover and were there also periods of depression outside the winter? A recurring seasonal pattern over at least two years supports the assessment. One difficult winter does not prove that pattern.

That is not a waiting period for care: a first depression in the winter may also require treatment. If possible, bring an overview of previous periods, including treatments and what helped. You don't have to keep a perfect diary to be taken seriously.

The assessment also covers physical health, sleep, medications, substance use and traumatic events. Additional research depends on the evidence; a blood test cannot detect winter depression. The doctor also looks at previous periods with a lot of energy and little sleep, because a seasonal pattern is also involved bipolar depression can occur.

Sources: Thuisarts and Dutch guideline: diagnosis of depression.

Light therapy: what do you do and when do you notice an effect?

Light therapy is a treatment option for winter depression. At agreed times you sit in front of a special lamp with bright white light without UV radiation. The light reaches your eyes; it's not about tanning or warming your skin.

The lamp and distance

A commonly used light intensity is 10,000 lux. That number applies at a certain distance: follow the manual of the device. An ordinary desk lamp, mood lamp or sunbed is not a replacement.

A session

Thuisarts describes half an hour in the early morning. Keep your eyes open, without staring directly into the lamp. For example, you can have breakfast or read. Adjust the schedule if your situation requires customization.

Follow the result

Discuss not only whether you are more awake, but also whether your mood, pleasure and functioning improve. In addition, note side effects and changes in sleep.

Treatment schedules differ. The UMCG, for example, describes a week with morning sessions of 45 minutes, with repetition if necessary. This does not mean that longer is automatically better or that everyone has to sit in front of a lamp every day all winter long.

For some people, something changes already in the first week; others need longer or do not benefit sufficiently. Agree an evaluation moment in advance. If there is insufficient improvement after two to three weeks, discuss a next step with your doctor. If deterioration occurs, do not wait for that moment.

Sources: Thuisarts: light therapy at home and UMCG: treatment and evaluation.

When should you first discuss light therapy?

Ask for advice in advance if you have retinal disease, recent eye surgery, a disease that can damage your eyes or medications that make you light sensitive. If necessary, have the pharmacist check your medications. A lamp without UV does not mean that the treatment is without risk for everyone.

Headache, eyestrain, nausea and restlessness may occur. Light late in the day can disrupt falling asleep. Discuss bothersome side effects; do not sit closer or extend sessions to get faster results.

Sources: NCCIH: safety, Amsterdam UMC: side effects and guideline for light therapy for bipolarity.

What if light therapy is not suitable or does not help enough?

Psychological treatment

With CBT you examine thoughts and behaviour that maintain symptoms. Behavioural activation helps to resume feasible activities. In a winter pattern, the treatment can pay specific attention to withdrawal, postponement and dread of dark months. The goal is not to make winter mandatory.

Other forms of therapy may be appropriate, depending on your symptoms, preference and previous treatment. Read what you do with different therapies.

Antidepressants

Medication may be considered, for example when other treatment does not help enough or the depression is more severe. SSRIs are one possible group. There is no drug that is the best 'winter pill' for everyone. Previous effect, side effects and possible bipolarity are taken into account.

Compare antidepressant groups and read about phase out. Don't stop yourself as soon as spring starts.

Ask who coordinates the treatment, what you can do during a waiting period and when a referral is necessary. An unsatisfactory result is a reason to look again at diagnosis, implementation and treatment choice, not to blame you.

Sources: Dutch guideline: psychotherapy, NCCIH and general treatment principles.

What can you do yourself in dark months?

See these tips as support, not as an assignment to improve yourself. Choose one small step that is actionable. Not being able to start can be part of depression.

Daylight and rhythm

Go outside during the day if possible, for example a short lap after breakfast. Keep getting up, meals and going to bed as regular as possible. Outdoor light supports your daily rhythm, but is not a guaranteed treatment.

A little activity

Plan something concrete: five minutes of tidying up, making a simple meal or briefly exercising at your level. Make the step smaller if it turns out to be too big. You don't have to feel motivated first.

Contact and help

Ask someone to walk together, eat or give you a call. You can say: 'I will withdraw when things get worse; Would you like to contact your clinician yourself?' Limit alcohol and do not use it as a sleeping aid.

Practical elaboration of NHS advice for seasonal depression. More examples: small exercises and activities at home.

Make a personal winter plan in advance

If you recognise the pattern, you can discuss how you will follow signals before the dark months. A plan provides guidance, but does not guarantee that symptoms will disappear. For example, record:

My first signals: what changed first in previous winters?
My feasible basis: What daily structure, activities and contacts do I want to maintain?
My treatment appointment: when do I contact you and when do we evaluate?
My support: Who can help me if I cancel appointments or neglect myself?
My review: what helped this winter, what didn't and what do we discuss before the next one?

Do not start medication or a more intensive light schedule every autumn on your own initiative. Make agreements based on previous symptoms and previous response. Treatment of an existing episode and prevention of the next are different questions.

Practical questionnaire inspired by UMCG: monitor symptoms and decide together and guideline: recovery and relapse prevention.

When to seek help and what do you ask the doctor?

Make an appointment if sadness, loss of pleasure or exhaustion persists or interferes with your daily life. Don't wait until spring. For example, ask: does this fit with a winter pattern, which treatment is safe with my medications, and what do we do if I don't recover?

In case of rapid deterioration, serious self-neglect, confusion or thoughts of suicide, contact your GP, out-of-hours GP service or personal clinician immediately.

Further reading: other forms of depression and treatment, medication and next steps.

Frequently asked questions

Is every winter blues a winter depression?

No. Less energy in winter is not automatically a depressive episode. Persistent sadness or loss of pleasure and limitations in your daily life deserve attention.

Do I have to wait two winters before I can get help?

No. Repetition helps to assess a seasonal pattern, but a first depression in winter may also require treatment.

Is a daylight lamp the same as a light therapy lamp?

Not automatically. Check whether the device is intended for light therapy, does not emit UV and what distance corresponds to the specified light intensity. A tanning bed is not an alternative.

How quickly does light therapy work?

Sometimes you notice a difference in the first week. It may take longer and not everyone will benefit from it. Discuss insufficient effect after two to three weeks; If deterioration occurs, seek advice sooner.

Can light therapy help with bipolar disorder?

Sometimes, but under expert supervision due to the risk of hypomania or mania. Discuss previous periods with remarkably little sleep and a lot of energy beforehand.

Does vitamin D help against winter depression?

That has not been convincingly established. Treating a deficiency is different from treating winter depression. Do not use supplements as a substitute for appropriate care.

Is there also a summer depression?

Yes, seasonal depression can also occur in spring or summer. Discuss that pattern with your doctor; a winter light-therapy schedule is not automatically suitable for this.

Sources