Medically reviewed by Dr Sulaiman Shah, GMC No. 7038832 — The GP Clinic, 124 City Road, London.
Last updated: September 11, 2026
Quick answer: Depression is a real medical condition that causes persistent low mood, loss of interest in things you once enjoyed, and can affect your sleep, appetite, energy, and ability to function — lasting most of the day, every day, for two weeks or more. It’s not something you can simply “snap out of.” See a GP if these feelings persist for more than two weeks or start affecting your daily life.
Depression is one of the most common reasons people in the UK visit their GP, with talking therapy referrals through NHS Talking Therapies reaching well over a million people every year. Yet many people delay seeking help for months, or even years, either because they don’t recognise what they’re experiencing as depression, or because they’re unsure what actually happens once they book that appointment.
Understanding the difference between a genuinely low patch and clinical depression — and knowing exactly what support looks like — is where our online GPs can help.
Depression affects people differently, but symptoms generally fall into three categories:
Symptoms can present differently depending on gender. Women more commonly report classic low mood, tearfulness, and feelings of worthlessness, while men are statistically more likely to show irritability, anger, reckless behaviour, or increased alcohol use — symptoms that are often missed or misattributed to stress rather than depression.
These four experiences are frequently confused, but understanding the distinction genuinely helps you know what kind of support you need:
| Experience | Key Distinguishing Signs |
|---|---|
| Everyday sadness | Short-lived, tied to a specific event; mood lifts naturally within days |
| Grief | Follows a genuine loss; comes in waves, often alongside moments of connection or even relief; tends to gradually ease, though it can resurface |
| Burnout | Linked to prolonged overload, usually work-related; exhaustion, cynicism, and reduced sense of accomplishment; often improves with rest and boundary changes |
| Depression | Persistent, disproportionate to circumstances, lasting two weeks or more; doesn’t lift with rest, distraction, or the passing of time alone |
Grief and depression can overlap significantly, and it’s genuinely difficult even for professionals to tell them apart at times — which is exactly why a proper GP assessment matters rather than trying to self-diagnose.
GPs generally describe depression as mild, moderate, or severe, based on how many symptoms you have and how much they’re affecting your daily life:
This grading isn’t about minimising anyone’s experience — it’s how GPs decide the most appropriate starting point for treatment.
Depression rarely has a single cause. It usually develops from a combination of factors:
Sometimes depression develops without any obvious trigger at all — which can be confusing, but doesn’t make it any less real or valid.
A lot of people put off booking simply because they don’t know what to expect — so here’s exactly what usually happens. Your GP will ask about your mood, sleep, appetite, energy, and concentration over the past few weeks, often using a short, standard set of questions to help gauge severity. They’ll ask how these symptoms are affecting your daily life, and whether you’ve had any thoughts of harming yourself. This isn’t a test to pass or fail — it’s simply how they build an accurate picture so they can recommend the right level of support. The appointment is confidential, judgement-free, and there’s no requirement to have “the right words” prepared in advance.
Most antidepressants take 2 to 4 weeks to start having a noticeable effect, and up to 6 to 8 weeks for the full benefit. It’s common to experience mild side effects — such as nausea, headaches, or sleep changes — in the first couple of weeks, which usually settle as your body adjusts. It’s important never to stop taking antidepressants abruptly, even once you feel better, as this can cause withdrawal symptoms or a relapse; your GP will guide you through gradually reducing the dose when the time is right.
If someone you care about is struggling, your support genuinely matters, even if it doesn’t feel like enough at times:
Book an online GP appointment if:
Depression is one of the most treatable mental health conditions, with the vast majority of people responding well to the right combination of support, therapy, or medication. The hardest step is usually the first one. Our online GPs are available 7 days a week — confidential, understanding, and ready to help you find a path forward.
NHS England — Depression in Adults Published: October 2023 | Last Reviewed: October 2023
NHS England — Postnatal Depression Published: February 2023 | Last Reviewed: February 2023
NHS England — Seasonal Affective Disorder (SAD) Published: October 2023 | Last Reviewed: October 2023
No. Sadness is a normal, short-lived response to a difficult event. Depression is persistent, often disproportionate to your circumstances, and doesn’t lift on its own after a few days.
Most people start noticing an improvement within 2 to 4 weeks, with the full benefit typically felt by 6 to 8 weeks. It’s important to keep taking them as prescribed even if you don’t feel a difference immediately.
Mild depression can sometimes improve with time and self-help strategies, which is why GPs may recommend watchful waiting. However, moderate to severe depression usually needs active treatment to improve.
You don’t need the right words prepared. Simply telling your GP you haven’t been feeling like yourself, or that you think you might be depressed, is enough for them to start asking the right questions.
Burnout is typically linked to prolonged work-related overload and often improves with rest and boundary changes. Depression is more persistent, can occur without an obvious trigger, and doesn’t necessarily improve with rest alone.
Yes. Women more commonly report low mood and tearfulness, while men more often show irritability, anger, or increased alcohol use, which can make depression harder to recognise in men.
Yes. The baby blues are common, mild, and usually resolve within two weeks after birth. Postnatal depression is more persistent, more intense, and needs proper assessment and support.
It depends on severity. Mild depression often responds well to talking therapy or self-help alone, while moderate to severe depression is often treated with a combination of therapy and medication.
Listen without judgement, gently encourage them to see a GP, and take any mention of self-harm seriously. Checking in consistently matters more than one big conversation.
Yes, depression can relapse, which is why continuing any recommended treatment for the full course, and recognising early warning signs, is important even after you start feeling better.
Yes, this is extremely common. GP appointments for depression are confidential and judgement-free, and your GP is simply there to understand how you’re feeling and find the right support for you.
Severe depression may be referred to a specialist mental health team for more intensive support, and treatment may involve a combination of medication, therapy, and closer monitoring.
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