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Understanding Depression

Causes | Basics | Symptoms | Signs | Types of Depression

Biological Causes | Genetic Causes | Environmental Causes
Psychological Causes | Medical Illness Causes | Other Causes.

Medical Illness / Condition as a Cause of Depression

All individuals are vulnerable to depression, but people with a serious medical illness or condition may be at greater risk. Medical conditions can trigger depression in those who are vulnerable, or it can psychologically precipitate an episode, or it can actually be the root cause of depression. It is estimated that 10% - 18% of all depression is caused by an existing medical condition. Conversely, individuals who are suffer from depression could be at greater risk for developing certain medical conditions.

Symptoms of depression may also indicate the presence of a medical condition. If a serious medical condition is identified and treated it may alleviate the depressive symptoms. In addition, treatment for both the depression and the medical illness will aid the patient in managing both conditions. The net effect is an improvement in the quality of life.

A physician should determine whether depression is caused by a medical condition or illness. Usually a thorough medical evaluation by a physician is required to reach this conclusion.

Some doctors and researchers have concluded that physiological causes of depression are common. The American Association of Clinical Endocrinologists has stated, "The diagnosis of subclinical (without obvious signs) or clinical hypothyroidism must be considered in every patient with depression." In other words, every individual with depression should be tested for hypothyroidism because of its frequent presence and link to depression.

Medical Illnesses or Conditions that can be Related to Depression

Physical Sources
Medical Conditions
Drugs
Adrenal function - poor
Candida (yeast infection)
Exercise - little or none
Fibromyalgia
Food Allergies
Heavy metals (such as mercury and lead)
Hyperthyroidism
Hypoglycemia
Hypothyroidism
Nutritional deficiencies
Premenstrual syndrome
Selenium toxicity
Sleep disturbances
Arthritis
Brain tumors
Cancer
Cancer of the pancreas
Chronic inflammation
Chronic pain
Diabetes
Epilepsy
Head injury
Heart problems
Huntington's disease
Liver disease
Lung disease
Lupus
Multiple sclerosis
Parkinson’s disease
Stroke
Antihistamines
Anti-inflammatory agents
Antipsychotic drugs
Beta-blockers
Birth control pills
Cimetidine
Corticosteroids (adrenal hormone agents)
Cycloserine (antibiotic)
High blood pressure drugs
Indomethacin
Reserpine
Sedatives
Tranquilizers
Vinblastine
Vincristine
Infections
Hormonal disorders
AIDS
Influenza
Mononucleosis
Syphilis (late stage)
Tuberculosis
Viral hepatitis
Viral pneumonia
Addison’s disease (low adrenal function)
Cushing’s Disease (excessive pituitary hormone production)
High levels of parathyroid hormone
Low levels of pituitary hormones

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