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Major Depression: What you need to know

Written By Guest Writer on Thursday, February 7, 2013 | 9:00 AM

Major Depression: What you need to know
What is major depression?
Major depression is an illness that is typified by its most prominent symptom – a severe and persistent low mood, profound sadness, or a sense of despair.
The mood can sometimes appear as irritability or an inability to take pleasure in activities that usually are enjoyable.
 
Major depression is more than just a passing blue mood, a “bad day” or temporary sadness over a specific event.
 
The mood changes that occur in major depression are defined as lasting at least 2 weeks but usually they go on much longer – months or even years.
 
A variety of symptoms usually accompany the mood change, and the symptoms can vary significantly among different people.
 
Many people with depression also have anxiety and tend to worry more than average about their physical health. They may have excessive conflict in their relationships and may function poorly at work. Sexual functioning may be a problem. People with depression are susceptible to abusing alcohol or other substances.
 
Depression probably involves changes in the areas of the brain that control mood. Neuroscientists are continuing to work out the details, but there are several places where problems can occur. Chemical reaction inside nerve cells may be altered. Communication between nerve cells or nerve circuits can make it harder for a person to regulate their mood. Changes in hormones may play a role. How vulnerable a person is to hiccups in these functions is almost certainly influenced by genetic variations.
 
An episode of depression can be triggered by a stressful life event, such as the death of a loved one. But in many cases, depression does not appear to be related to a specific event.
 
Major depression may occur just once in a person’s life or may return periodically. Some people who have repeated episodes of major depression who have long pattern of a milder depressed mood called dysthymia. When major depression alternates with periods of great exuberance and energy, the illness is called bipolar disorder. If a woman has a major depressive episode within the first 2 or 3 months after giving birth to a baby, it is called postpartum depression. Depression that occurs mainly during the winter months is called seasonal affective disorder, or SAD.
 
Episodes of depression can occur at any age. Depression is diagnosed in women twice as often as in men. People who have a family member with major depression are more likely to develop depression or drinking problems.
 
What are the symptoms of major depression?
A depressed person may gain or lose weight, eat more or less than usual, have difficulty concentrating, or have trouble sleeping or sleep more than usual. He or she may feel tired and have no energy for work or play. Small burdens or obstacles may appear impossible to manage. The person can appear slowed down or agitated and restless. The symptoms can be quite noticeable to others.
 
A particular painful symptom of this illness is an unshakable feeling of worthlessness and guilt. The person may feel guilty about a specific life experience or may feel general guilt not related to anything specific.
 
If pain and self-criticism become great enough, they can lead to feelings of hopelessness, self-destructive behaviour, or thoughts of death and suicide. The vast majority of people who suffer severe depression do not attempt or commit suicide, but they are more likely to do so than people who are not depressed.
 
The thought of people with major depression are often irrationally coloured by their dark mood. For example, pessimistic ideas may be out of proportion with the reality of the situation. Sometimes, the depressed thinking is distorted enough to be called “psychotic”, that is, the person has great difficulty recognising reality. Sometimes, depressed people develop delusions (false beliefs) or hallucinations (false perceptions).
 
Symptoms of major depression include:
  • Distinctly depressed or irritable mood
  • Loss of interest or pleasure
  • Decreased or increased weight or appetite
  • Increased or decreased sleep
  • Appearing slowed or agitated
  • Fatigue or loss energy
  • Feeling worthless or guilty
  • Poor concentration
  • Indecisiveness
  • Thoughts of death, suicide attempts or plans
What is the expected duration of major depression?
Episodes of major depression last an average of 4 to 8 months, but they can last for any length of time. Symptoms can vary in intensity during an episode. If depression is not treated, it can become chronic (long-lasting). Treatment can shorten the length and severity of a depressive episode.
 
How is it diagnosed?
A primary care physician or a mental health professional usually can diagnose depression by asking questions about medical history and symptoms. Major depression is diagnosed when a person has many of the symptoms listed above for at least 2 weeks. Many people with depression do not seek treatment because of society’s attitudes about depression. The person may feel the depression is his or her fault or may worry about what others will think. Also, the depression itself may distort a person’s ability to recognize the problem.
 
What is the treatment of major depression?
A combination of psychotherapy and medication is most helpful. The most commonly prescribed antidepressants are known as selective serotonin reuptake inhibitors (SSRIs). They include fluoxetine (Prozac), sertraline (Zoloft), paroxetine (Paxil) and citalopram (Celaxa). They are fairly easy to take and relatively safe compared with previous generations of antidepressants.
 
No medication is without side effects. SSRIs are known to cause problems with sexual functioning, some nausea, and an increase in anxiety in the early stages of treatment.
 
Other relatively new and effective antidepressants are bupropion (Wellbutrin), venlafaxine (Effexor), mirtazapine (Remeron) and duloxetin (Cymbalta). The older classes of antidepressants, trycyclic antidepressants and monoamine inhibitors, are still in use, are as effective as the newer ones, and can be very useful when someone does not feel better in response to other treatments.
 
It usually takes at least 2 to 6 weeks of taking any antidepressant to see improvement. Once the right medication is found, it may take up to a few months to find a proper dose and for the full positive effect to be seen.
In the past few years, investigators have raised concerns about an increased risk of suicide in people taking antidepressants. This problem has remained a focus for researchers, but the evidence is hard to interpret. Many experts believe that antidepressants reduce the number of suicides overall, but a very small number of people taking these medications probably do have an unusual reaction and end up feeling much worse rather than better. Therefore, it is important to have treatment monitored closely and to report any troubling symptoms or worsening mood to the doctor immediately.
 
Sometimes, 2 different antidepressants are prescribed together. Or a mood stabilizer, such as lithim (sold under different brand names) or valproic acid (Depakene, Depakote), is added. If psychotic symptoms are present, an antipsychotic medication is usually prescribed. These include haloperidol (Haldol), risperidone (Risperdal), olanzapine (Zyprexa, Zydis), ziprasidone (Geodon) and aripiprazole (Abilify).
 
A number of psychotherapy techniques have been demonstrated to be helpful, depending on the causes of the depression, the availability of family and other social support, and personal style and preference. A technique called cognitive behaviour therapy is designed to help a depressed person recognize fearful thinking and teaches techniques for controlling symptoms. Psychodynamic, insight-oriented or interpersonal psychotherapy can help depressed people to sort out conflicts in important relationships or explore the history behind the symptoms.
 
If you know anyone who suffers from depression, it helps to learn more about it and find out what support is available to such ones in the community.
 
In some situations, a treatment called electroconvulsive therapy (ECT) can be a life-saving option. This treatment is controversial, but very effective. In ECT, an electrical impulse is applied to the person’s scalp and passes to the brain, causing a seizure. The patient is under anaesthesia and is monitored carefully. 
 
Medication is given before the procedure to prevent any outward signs of convulsions, which helps to prevent injury. Improvement is seen gradually over a period of days to weeks after the treatment. ECT is the quickest and most effective treatment for the most severe forms of depression, and in most people, it is not more risky than other antidepressant treatments.
 
What is the prognosis of major depression?
Treatment of depression has become quite sophisticated and effective. The prognosis with treatment is excellent. The intensity of symptoms and the frequency of episodes often are significantly reduced. Many people recover quickly.
 
When treatment is successful, it is important to stay in close touch with your doctor or therapist, because maintenance treatment is often required to prevent depression from returning.
 
There are no specific tests for depression. However, it is important to be evaluated by a primary care physician to make sure the problems are not being caused by a medical condition or medication.
 
How can one prevent major depression?
There is no way to prevent major depression, but detecting it early can diminish symptoms and help prevent the illness from returning.
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