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Get The Facts

Mental health: clinical depression

Information Services
 
 

Mental Health

Mental health: clinical depression

It is hard for people who have not experienced clinical depression to understand its emotional impact and severity. 

Clinical depression is a serious, potentially lethal disorder that impacts on a person physically, emotionally and even cognitively - slowing your thought processes and reducing your ability to concentrate.

 

Normally depression is caused upsetting or disappointing circumstances, and it resolves over time. Clinical depression is influenced far more by inherited body chemistry than circumstances. 

 

Diagnosis

A diagnosis if based on one of the following two elements being present for at least two weeks:

  • Depressed mood, or
  • Anhedonia (The absence of pleasure or the ability to experience it).

 

In addition, at least five of the following ten symptoms must occur too:

  • Feelings of overwhelming sadness, fear or lack of emotion
  • Decreased interest in daily activities
  • Changing appetite and marked weight gain or loss
  • Disturbed sleep patterns
  • Unintentional and purposeless movements
  • Fatigue, mental or physical, and loss of energy
  • Intense feelings of guilt, anxiety, hopelessness and worthlessness
  • Trouble concentrating, making decisions or remembering
  • Recurrent thoughts of death or suicide
  • Fear of being abandoned by those close to one.

 

Treatment for depression

There are two primary modes of treatment, typically used in conjunction - medication and psychotherapy. A third treatment, electroconvulsive therapy (ECT), may be used when chemical treatment fails.


Medications:  Most antidepressants are believed to work by slowing the removal of certain chemicals from the brain. These chemicals are called neurotransmitters (such as serotonin and norepinephrine). Neurotransmitters are needed for normal brain function and are involved in the control of mood and in other responses and functions, such as eating, sleep, pain, and thinking.

Antidepressants help people with depression by making these natural chemicals more available to the brain. By restoring the brain's chemical balance, antidepressants help relieve the symptoms of depression.

 

Psychotherapy:  This offers people the opportunity to identify the factors that contribute to their depression and to deal effectively with the psychological, behavioural, interpersonal and situational causes. Skilled therapists aim to:

  • Pinpoint the problems that contribute to depression
  • Identify and assist with negative or distorted thinking patterns
  • Explore learned thoughts and behaviours that contribute 
  • Help regain a sense of control and pleasure in life. 

 

Electroconvulsive Therapy (ECT):  This is an extremely effective, very fast-acting, antidepressant treatment. Where other antidepressant medications have failed, ECT is often still effective. The difficulty and main disadvantage for this procedure is the need for anesthesia and the short-term confusion and memory effects immediately after treatment. 

 

Suicide risk

Be aware of any signs of suicide risk. If suicidal thoughts are present it is important to encourage the person to seek help from a doctor or psychologist. Warning signs to look for include:

  • Statements like "It would have been better if I had died"
  • Making threats about committing suicide
  • Suddenly becoming cheerful after a long period of depression (this can indicate a decision to use suicide as a solution)
  • Having a plan for suicide, and the means to achieve it are very strong warning signs and must be taken very seriously. 

 

All suicidal comments need to be addressed, but having a plan and the means to achieve it is a sign that professional help needs to be sought as a matter of urgency. If the situation is critical, call 000.

 

References and further information

 

References Specific to Electroconvulsive Therapy 

  • Abrams, R. (2002). Electroconvulsive Therapy (4th Ed.). Oxford University Press Inc. New York.
  • Datto, C. J. (2000). Side effects of electroconvulsive therapy. Depression and Anxiety, 12, 130-134.
  • Ghaziuddin, N., Laughrin, D. & Giordani, B. (2000). Cognitive Side Effects of Electroconvulsive Therapy in Adolescents. Journal of Child and Adolescent Psychopharmacology, 10, 269-276.
  • Sackeim, H. A., Prudic, J., Devanand, D.P., et al (1993). Effects of Stimulus Intensity and Electrode Placement on the Efficacy and Cognitive Effects of Electroconvulsive Therapy. The New England Journal of Medicine, 328, 839-846.
  • Sackeim, H. A., Prudic, J., Nobler, M. S., Fitzsimons, L., Lisanby, S. H., Payne, N., Berman, R. M., Brakemeier, E., Perera, T. & Devanand, D. P. (2008). Effects of pulse width and electrode placement on the efficacy and cognitive effects of electroconvulsivetherapy. Brain Stimulation, 1, 71-83.
  • Weiner, R. D. (2001) The Practice of Electroconvulsive Therapy: Recommendations for Treatment, Training and Privileging (2nd Ed.). American Psychiatric Association. Washington.
 

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