📚 Module Overview
On completion of this module, you will be able to:
- Recognise the common presentations and diagnostic criteria for depression.
- Understand the stepped-care model for managing depression of varying severities.
- Describe the treatment options for depression, including pharmacological and psychological interventions.
- Confidently select, initiate, and monitor first-line antidepressant therapies according to NICE guidelines.
- Counsel patients on key aspects of antidepressant treatment, including side effects and discontinuation.
- Apply knowledge to clinical and OSCE-style scenarios.
- Severity dictates treatment: Management ranges from watchful waiting to combined, high-intensity treatments.
- Shared decision-making is key: Patient preference is central to choosing between psychological therapies and medication.
- SSRIs are first-line: Generic SSRIs are the first-choice pharmacological treatment for most adults.
- Manage expectations: Counsel that antidepressants take 2-4 weeks to work, and side effects often appear first.
- Review and monitor: Regular follow-up is essential to assess response, adherence, and suicide risk, especially in the early stages.
🔍 Diagnosis & AssessmentNICE NG222
A diagnosis of depression is based on the number of symptoms, severity, and functional impairment over a period of at least 2 weeks.
Screening Questions (PHQ-2)
A quick and effective way to screen for depression is to ask two questions about the core symptoms:
"During the last month, have you often been bothered by:
- Little interest or pleasure in doing things?
- Feeling down, depressed, or hopeless?
A 'yes' to either question warrants a more in-depth assessment (e.g., using the PHQ-9).
Diagnostic Criteria (DSM-5)
For a formal diagnosis, a person must have five or more of the following symptoms present nearly every day for at least two weeks. At least one of the symptoms must be (1) depressed mood or (2) loss of interest or pleasure.
| Symptom Category | DSM-5 Criteria |
|---|---|
| Core Symptoms | 1. Depressed mood most of the day. 2. Loss of interest or pleasure (anhedonia) in all, or almost all, activities. |
| Somatic Symptoms | 3. Significant weight loss or gain, or decrease/increase in appetite. 4. Insomnia or hypersomnia. 5. Psychomotor agitation or retardation. 6. Fatigue or loss of energy. |
| Cognitive Symptoms | 7. Feelings of worthlessness or excessive/inappropriate guilt. 8. Diminished ability to think or concentrate, or indecisiveness. 9. Recurrent thoughts of death, suicidal ideation, or a suicide attempt/plan. |
The Cognitive-Behavioural Framework
This model helps patients understand the vicious cycles that maintain depression.
💭 Thoughts
"I'm worthless"
"Nothing will change"
"I'm a failure"
❤️ Feelings
Sadness
Anxiety
Guilt
Numbness
⚡ Physical
Fatigue / Tiredness
Poor sleep
Change in appetite
🏃 Behaviours
Withdrawal from friends
Stopping hobbies
Staying in bed
The components interact to form a cycle: Negative thoughts lead to low feelings, which cause physical symptoms and withdrawal (behaviour), reinforcing the negative thoughts.
🛡️ Management Principles & Stepped Care
NICE recommends a stepped-care approach, where the intensity of the intervention matches the severity and complexity of the depression.
NICE Treatment Choices
All patients presenting with possible depression undergo assessment, including risk assessment.
- Discuss treatment options and establish patient preference.
- Offer one low-intensity psychological intervention:
- Individual guided self-help based on CBT principles.
- Computerised CBT (cCBT).
- Group CBT.
- Do not routinely offer antidepressants unless the patient has a preference for them or has a history of moderate/severe depression.
- Offer a choice of:
- An antidepressant (usually an SSRI), OR
- A high-intensity psychological intervention (e.g., individual CBT, interpersonal therapy).
- Consider offering antidepressant treatment combined with a high-intensity psychological intervention, as this is the most effective treatment.
💊 Pharmacological Management (Antidepressants)BNF
This section details drug treatments for depression, based on NICE guideline NG222 and the BNF.
Choice of Antidepressant
When an antidepressant is chosen, NICE recommends a generic SSRI as first-line due to its favourable risk-benefit ratio. Sertraline and Citalopram are often preferred due to fewer interactions.
| Treatment Line | Medication Examples & Dosages (Adults) | Monitoring Requirements (SPS) & Key Alerts |
|---|---|---|
| First-Line (SSRI) |
|
Monitoring:
|
| Second-Line |
|
SNRI (Venlafaxine):
|
Duration & Discontinuation
- Duration: Continue antidepressants for at least 6 months after the patient feels they have recovered to reduce the risk of relapse.
- Discontinuation: When stopping, the dose should be gradually reduced over a 4-week period (or longer). Paroxetine and Venlafaxine are associated with more severe discontinuation symptoms and require a particularly slow withdrawal. Fluoxetine has a long half-life and can often be stopped without tapering.
🗣️ Psychological Therapies (IAPT)
Psychological therapies are a key part of depression treatment. Patients can often self-refer to local NHS Talking Therapies services (formerly IAPT).
| Therapy Type | Description | Best Suited For |
|---|---|---|
| Cognitive Behavioural Therapy (CBT) | Helps patients identify and change unhelpful thinking patterns and behaviours. It's structured, practical, and focuses on current problems. | Less severe and more severe depression. Can be delivered in various formats (group, individual, computerised). |
| Behavioural Activation (BA) | A simpler therapy focusing only on the 'behaviour' part of CBT. It helps patients gradually increase their engagement in rewarding activities to break the cycle of withdrawal and low mood. | Less severe depression. As effective as CBT but less complex. |
| Interpersonal Therapy (IPT) | Focuses on relationship problems and how they relate to depressive symptoms. Helps patients improve communication and resolve interpersonal conflicts. | Depression that is clearly linked to relationship difficulties. |
| Counselling for Depression | A specific, evidence-based form of counselling designed to help people explore and understand the underlying causes of their depression. | Patients who wish to explore deeper emotional issues. |
🥗 Lifestyle Advice & Support Services
Holistic care involves supporting patients to make positive lifestyle changes.
🏃 Physical Activity
There is strong evidence that regular exercise can be an effective treatment for mild depression and can improve outcomes in more severe depression.
- NHS Live Well - Exercise: Provides guidance on the benefits of exercise for mental health.
- NHS Better Health - Get Active: Offers tips, tools, and apps like 'Couch to 5K' to help people start exercising.
🧠 Mental Wellbeing Resources
Providing patients with reliable sources of information and support can empower them.
- NHS Every Mind Matters: The main NHS portal for mental health advice, with a personalised action plan tool.
- Mind Charity: The UK's leading mental health charity, providing information, support, and local services.
- Samaritans: A confidential listening service available 24/7 for anyone in distress. Call free on 116 123.
🍺 Alcohol Reduction
Alcohol is a depressant and can worsen symptoms of depression and interfere with treatment.
- NHS Drink Less: Offers advice and tools, including the Drink Free Days app, to help people cut down.
- Drinkaware: A national charity with a wealth of information and online tools to help people assess their drinking.
🎯 OSCE Preparation
Counselling a Patient Starting an Antidepressant
Scenario: Mr. Khan, a 42-year-old, has been prescribed Sertraline 50mg for his first episode of moderate depression. He is collecting his first prescription and seems anxious about taking it.
Key Communication & Counselling Steps:- Acknowledge & Set Agenda: "Hi Mr. Khan, I'm the pharmacist. I can see this is your first time taking Sertraline. Is it okay if we have a quick chat about it to make sure you know what to expect?"
- Explore Concerns: "Some people have worries when they first start a medicine like this. Is there anything on your mind about it?" (This might bring up fears of addiction or side effects).
- Explain How it Works & Timeframe: "Sertraline works by balancing a chemical in your brain called serotonin, which helps to lift your mood. It's really important to know that it's not a quick fix - it can take 2 to 4 weeks before you start to feel a real benefit in your mood."
- Counsel on Side Effects: "In that first couple of weeks, you might notice some side effects before your mood improves. The most common ones are feeling a bit sick or having an upset stomach. This usually settles down on its own. It's best to take the tablet with food to help with this."
- Adherence & Duration: "For the medicine to work properly, you need to take it every day. Even when you start to feel better, you should keep taking it. The usual plan is to continue for at least 6 months after you feel well to stop the depression from coming back."
- Safety Netting & Follow-up: "The GP will want to see you again in a couple of weeks to see how you're getting on. It's very important you don't just stop taking it, as you can get withdrawal effects. If you feel your mood gets worse, or you have any thoughts about harming yourself, you must contact your GP straight away. How does all that sound?"
⭐ Bonus: Clinical Pharmacist Case Study
The Patient: Inadequate Response to First-Line Treatment
Patient Profile: Ms. Evans is a 35-year-old woman diagnosed with depression 8 weeks ago. She was started on Citalopram 20mg daily. She had a review at 4 weeks, where the dose was increased to 40mg daily.
Current Medication: Citalopram 40mg OD.
The Challenge: Ms. Evans contacts the practice pharmacist. She reports taking her Citalopram 40mg daily for the last 4 weeks but feels there has been "no real change" in her mood. She feels despondent and is questioning if anything will work. She has not experienced any significant side effects.
Pharmacist's Consultation & Plan (SOAP Note Format)
- Subjective: Patient reports minimal improvement in depressive symptoms after 4 weeks on the maximum tolerated dose of Citalopram (8 weeks total treatment). She feels hopeless about treatment. She is adherent and tolerating the medication well.
- Objective: Adequate trial of a first-line SSRI (Citalopram 40mg for 4 weeks) with suboptimal response.
- Assessment:
- The patient has treatment-resistant depression at this stage (failure to respond to an adequate trial of a first-line antidepressant).
- According to NICE guidelines, the next step is to switch to a different antidepressant. Switching to another SSRI is a valid option, as is switching to a different class like an SNRI.
- It is important to manage the patient's expectations about the switching process and reassure her that it is common for the first medication not to work.
- Plan:
- Validate & Reassure: Validate her disappointment and reassure her that it is very common for the first antidepressant not to be the right one, and that there are many other options to try.
- Medication Plan: Propose a switch to another SSRI, such as Sertraline 50mg daily. Explain the rationale (sometimes people respond to one SSRI but not another). Discuss the switching strategy with the patient and prescriber. A direct switch is often possible, but a cross-tapering approach might be considered. (For Citalopram to Sertraline, BNF suggests withdrawing Citalopram and starting Sertraline at a therapeutic dose the next day).
- Counselling: Counsel her on the new medication, including the time to effect and side effect profile, reinforcing the key points from the initial consultation.
- Psychological Therapy: Check if she has been offered or is engaged with psychological therapy. If not, highlight this as another key treatment component that could be started alongside the new medication.
- Safety Netting & Follow-up: Arrange a follow-up call in 2 weeks to see how she is tolerating the new medication. Reinforce the advice to contact her GP immediately if her mood worsens or she experiences suicidal thoughts.