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WHAT is depression?

Depression was first classified as an 'illness' in western medical diagnostic manuals in the 1930s and the social acceptance of depression as an illness is very recent (www.studentdepression.org).

Depression is recognised as an illness that involves the body, mood and thoughts; the predominant feelings are ones of sadness.  Depression affects the way a person eats and sleeps, the way one feels about oneself, and the way one thinks about things. Depression describes an individual episode of mood disorder; a depressive episode may be a single episode or it may be part of a lifetime pattern of mood disorder.

An internet search (Google and MSN) identified the following definitions of depression:

  • A mental state characterized by a pessimistic sense of inadequacy and a despondent lack of activity.

  • Depression is an illness characterised by a prolonged low mood which affects the ability to carry out day to day activities.

  • Depression is a mood disorder with a number of physical manifestations in addition to its psychological effects.

  • Depression is a serious and possibly life-threatening affliction.

  • Depression is the second most costly disease there is.

  • Depression is a medical illness caused by a chemical imbalance in the brain.

  • Depression is defined as the "loss of interest or pleasure in nearly all activities" and "sustained fatigue without physical exertion".

  • Depression usually isn't caused by one event or thing; it's the result of one or more factors, and its causes vary from person to person.

  • Depression is more than the blues or the blahs; it is more than the normal, everyday ups and downs.

  • Depression is defined as an illness when the feelings of depression persist and interfere with a persons ability to function.

 

The official 2006 WHO definition of depression states:

“Depression is a common mental disorder that presents with depressed mood, loss of interest or pleasure, feelings of guilt or low self-worth, disturbed sleep or appetite, low energy, and poor concentration. These problems can become chronic or recurrent and lead to substantial impairments in an individual's ability to take care of his or her everyday responsibilities”.

 

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WHAT causes depression?

Depression has no single cause and varies from person to person.  Depression as a disease is a multifactorial syndrome with multiple processes which can manifest itself as a result of a variety of circumstances and may be due to a multiplicity of factors.

The adoption and utilisation of a purely biomedical perspective separates the biological from the other factors and results in an artificial appraisal of depression.  The biopsychosocial model is useful to understand the causation of depression where biological (genetic and biochemical), sociological and psychological factors interact to produce a picture of depression

The list below identifies some of the factors that play a part in the onset of depression:

  • Past experiences

  • Personality

  • Traumatic life event or series of events

  • Loss

  • Lifestyle - poor diet, poor physical fitness

  • Disease and illness:

    • Toxic-metabolic:

      • Hyperthyroidism, hypothyroidism, Cushing's syndrome, hypercalcaemia, hyponatraemia, diabetes mellitus.

    • Neurological disorder:

      • Stroke, subtotal haematoma, multiple sclerosis, brain tumours (especially frontal), Parkinson's disease, Huntington's disease, uncontrolled epilepsy, syphilis, dementias.

    • Nutritional disorder:

      • Vitamin B12 deficiency, pellagra.

    • Other:

      • Viral infection, carcinoma.

  • Use of recreational drugs e.g. sedative-hypnotics, cocaine.

  • Alcohol.

  • Prescribed medications e.g. beta-blockers, alpha-methyldopa, levodopa, and oestrogens.

  • Changes to the neurotransmitters in the brain - although there is uncertainty as to whether this is a cause of depression or a result of depression.

 

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WHAT are the current problems with the management of depression?

  • Lack of identification of patients with depression; 80% patients with depression present with non-specific physical symptoms and avoid mentioning any symptoms concerned with emotions (University of York, 2002).

  • Variability in the threshold at which GPs label patients as needing treatment (Kendrick, 2000).

  • The majority of depressed patients in general practice receive less than the recommended doses and duration of antidepressant treatment according to clinical practice guidelines (Kendrick, 2001).

  • Patients are often reluctant to accept medication and think that counselling should be offered (Priest, 1996).

  • Stigma is a major factor in the failure of individuals with depression to seek or maintain treatment (Corrigan, 2004).

  • Patients often stop their medication as soon as they feel better due to worries about addiction. Symptoms return in approximately 50% patients who stop their prescription as soon as they feel better (Montgomery, 1995).

  • Inadequate follow-up of patients (Solberg, 1999).

  • Lack of availability of psychological therapies due to a lack appropriately trained therapists (Depression Report, 2006).

 

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WHAT are the costs of depression?

  • The total cost of mental health problems in England in 2002/03 has been estimated at £77.4 billion (SCMH, 2003).

Categories

Costs
(£ billion)

Health and social care costs: 12.5
NHS services 6.5
Informal care 3.9
Local authority social services 1.4
Other public sector costs 0.5
Private expenditure 0.2
   
Human costs: 41.8
Households 37
Institutional population 1.3
Premature mortality 3.5
   
Output losses: 23.1
Sickness 3.9
Non-employment 9.4
Unpaid work 8.0
Premature mortality 1.8
   

Total cost
 
77.4

 

  • Depression reduces economic output through time off-sick, non-employment and unemployment; there are currently more people on incapacity benefits due to mental health problems than the total number of unemployed people on Job Seeker’s Allowance (Depression Report, 2006).

  • The total loss of output due to depression and anxiety is approximately £12 billion per year, equivalent to 1% of the total national income (Depression Report, 2006).

  • Over 91 billion working days are lost due to mental health problems every year; half of the days lost are due to anxiety and stress conditions (MHF, 2003).

  • 71% people who have mental distress as their main disability are out of work.

  • Sickness due to mental distress has increased by 20% in the past 20 years (MHF, 1995).

  • Depression and anxiety attract only 2% of NHS spending on mental health (Depression Report, 2006).

  • Depression is associated with a 50% increase in the medical costs of chronic medical illness, even after controlling for severity of the physical illness (Katon, 2003).

  • Between 1992 – 2003 there was an 180% increase in antidepressant prescriptions, and a 2083% increase in cost in the UK (MHF, 2005).

  • In 2005 the number of antidepressant prescriptions in the UK totalled 29.4 million at a cost of £338.5 million, half of these prescriptions issued and their costs were for an SSRI (DH, 2006)
     

 

Cost Matrix for Depression (SCMH, 2003, Chisholm, 2001)

 
  Care Costs Productivity Costs Other Costs
Depressed
Individual
Treatment - prescription fees; therapy costs. Non-employment; unemployment; time off-sick; work disability. Anguish; treatment; side effects; suicide; premature mortality.
Family & Friends Informal care-giving. Time off work. Carer burden.
Employers Employer contributions to treatment and care. Reduced productivity. -
Society NHS, Social Services & other public sector costs.  Taxation and insurance. Reduced productivity. Loss of lives; untreated depression; unmet need.

 

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WHAT treatments are there for depression?

 

There are a wide range of treatment options for depression.  However, in primary care, the main treatment for depression has been antidepressant therapy.  Evidence-based psychological interventions are of limited availability due to long waiting lists because of a lack of therapists or no therapists at all (Depression Report, 2006).

  • Until the 1990s, the drugs of choice were either the TCAs or the MAOIs; since then the SSRIs are the antidepressants most frequently prescribed.

  • TCA prescribing in the USA, between 1990 and 1995, declined by 17%, but this was matched by a 27% increase in SSRI prescribing for the same period (Sclar, 2001).

  • The SSRIs do have benefits, they are safer in overdose and have an improved side effect profile over the older antidepressants (NICE, 2004).

  • The marketing of the SSRIs, for the first time, laid claim to a physical cause for a mental illness i.e. the depletion of the neurotransmitter, serotonin, in the brains of people with depression.  This identification of a biomedical model which provided a physical cause for depression, helped to make the SSRIs a much more socially acceptable antidepressant (Lacasse, 2005).

  • There is an argument which states that the biomedical concept of depression obscures the diversity of problems and experiences of individuals and undervalues the social explanations and interventions which cause depression (Moncrieff, 2006).

 


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WHAT clinical service developments were implemented as a result of research?

As a result of the research initiative which commenced with the MSc Primary Care, Elmham and Swanton Morley Surgeries developed structured systematised care for patients diagnosed with anxiety and/or depression. 

 

Protocol for the Management of Depression in Primary Care:

The availability and application of a practice protocol ensured a consistent approach to the management of the care for depression across the practice.

Depression Protocol

 

Depression Templates:

Two computer templates were designed which all clinicians were encouraged to use:


1. 'Depression - Initial Diagnosis':

  • Used to document the diagnosis of depression using the DSM-IV criteria and also assesses suicide risk.

2. 'Depression Management':

  • Used to record the Hospital and Anxiety Depression Scale (HADS) score, plus any interventions recommended by the clinician e.g. referral to exercise scheme, cCBT, link worker.

  • The use of the HADS score has enabled the practice to try and distinguish between anxiety and depression as a diagnosis and, in accordance with the NICE guidelines, depression is always treated as the priority.

 

Depression Patient Care Pathways:

Elmham and Swanton Morley Surgeries worked closely with the mental health worker and local secondary care professionals to develop patient care pathways for mild depression and moderate depression:

Patient Care Pathway - MILD Depression

Patient Care Pathway - MODERATE Depression

 

Depression Pack:

Elmham and Swanton Morley Surgeries developed a ‘Depression Pack’ which contains a variety of information for patients to dip in and out of i.e. booklets on depression, anxiety, stress, leaflets on counselling, relationships, exercise etc.  Feedback from both patients and clinicians regarding the use of the Depression Pack was very positive.

 

 

 

Depression Pack

 

Exercise Referral Scheme:

Elmham and Swanton Morley Surgeries have access to an exercise referral scheme in Norfolk PCT, this is a popular and useful resource for patients, particularly those patients who have been diagnosed with mild depression.

Mental Health Foundation - 'Up and Running'

 

Computerised CBT:

Elmham and Swanton Morley Surgeries purchased an annual licence for the computerised CBT programme, 'Beating the Blues', in December 2005.  Due to the success of this programme, it is now in its third year of operation. 

  • Beating the Blues is recommended by NICE as the preferred cCBT programme for anxiety and depression (NICE, 2006).

  • Beating the Blues is available to all patients in the practice and consists of eight one hour sessions taken either weekly or fortnightly. 

  • Feedback to date has been extremely positive from the majority of patients. 

  • The use of cCBT has freed up the time of the mental health link worker, thus enabling the link worker to be able to provide more one to one support for those patients who require this form of therapy.

Beating the Blues

CCBT - NICE Guidance

CCBT - NICE - Public Information

 

Training and Support:

The mental health link worker has provided both the GPs and the Nurse Department staff with training and support around the topics of depression and anxiety. 

 

Audit:

Elmham and Swanton Morley Surgeries has audited its activity and effectiveness in the management of the care of depression and application of these additional tools. 

  • Quarterly audit throughout 2006 demonstrated a reduction in prescribing of either TCAs or SSRI antidepressants. 

  • There was a steady increase in the number of depression packs given out to patients.

  • The percentage of patients who have a HADS score entered for anxiety and depression is increasing. 

 

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WHAT do we know about the patient experience of stopping antidepressant medication?

  • Some research has been undertaken to understand the patient’s experience and perspective about taking antidepressant medication, however there is no evidence in the literature which looks at the patient experience and patient needs when stopping antidepressant medication. 

  • Between 30% and 60% of patients do not take their antidepressant medication as prescribed, this means that between 40% and 70% of patients do take their medication as prescribed. 

  • Much of the literature is focussed on improving concordance with medication in order to reduce relapse rates.

  • It is important to ensure patients with depression do not continue taking antidepressant medication for a length of time which exceeds their recovery from depression. 

  • All medications have a risk/benefit profile and are appropriate to treat and maintain an illness until recovery, however exceeding this may alter the risk/benefit profile adversely. 

My MSc Primary Care dissertation was a small qualitative study which aimed to understand the user perspective and identify possible changes in order to improve our depression care service in the practice.  In-depth interviews were used to explore the experiences, expectations and needs of nine patients with mild to moderate depression.  The results from this study indicate that patients with depression expect a depression service which has the dimensions of quality applicable to any quality healthcare service  i.e. access, structured follow-up, patient-centred care, shared decision making, information, continuity of care.  However, there was one unexpected finding from this study; I found that some patients have considerable anxiety about stopping antidepressant medication when they are ‘better’. 

 

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WHAT is my PhD research about?

My PhD is a study based in a single UK general practice; it uses a qualitative framework to explore the nature of the concerns patients experience when they stop their antidepressant medication.  A mixed method approach has been adopted, utilising questionnaires and in-depth interviews to ask the research question:

"What is the nature of the concerns patients experience when they stop their antidepressant medication", and, "Are these concerns dependent upon a personal construction of the meaning of recovery from a depressive illness?”

The study sample consists of patients with depression who have been prescribed either a tricyclic antidepressant or an SSRI antidepressant and whose care is managed solely in primary care. 

Research Flow Chart

 

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WHAT are the aims and objectives of the PhD research?

The primary aims of this study are to:

  • Develop an understanding of the individual experience and meaning of depression and its recovery.

  • Describe patients’ beliefs and apprehensions about antidepressant medication cessation.

The secondary aims of this study are to:

  • Identify patients’ explanatory models for their illness.

  • Understand how and what patients define as recovery from depression.

  • Identify whether concerns about stopping antidepressant medication really are a problem.

  • Explore patient concerns and fears about stopping antidepressant medication.

The objectives of this research study are to improve patient care by:

  • Informing healthcare professionals so they become aware of patient fears about stopping antidepressant medication in order to avoid long-term use of expensive medications in patients who may no  longer need them. 

  • Providing knowledge of patient fears in order to facilitate the development of an appropriate counselling strategy(s) for use by healthcare professionals in primary care.

  • Understanding what model of recovery the patient has, if indeed they actually have a model of recovery, and how this model contributes to decisions about continuing or discontinuing medication.

  • Potentially reducing relapse rates because of the improved overall management of depression.

     

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WHAT are the research outputs?

MSc Primary Care:

Publications:

 

*********************

PhD Primary Care:

Publications:

 

Presentations:

Posters:

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Disclaimer

This website is intended to provide helpful and informative material on the subject of depression.
It is not intended to provide medical advice to patients.
All information in this website is the sole responsibility of Penny Louch.
 

Last updated 17 August 2008

Website designed and created by Penny Louch
Copyright ©2006 Penny Louch