Depression

Depression
Depression is a medical illness which negatively affects one’s mood, body, thoughts and feelings.

Bipolar disorder
Bipolar disorder is a mood disorder characterised by extreme shifts in mood, energy and functioning.

Bipolar disorder - from Natural Standard
Bipolar disorder, also known as manic-depressive illness, is a psychiatric disease characterized by periods of abnormally elevated moods, often followed by episodes of depression.

Dysthymia
Dysthymia is a long-lasting, less severe experience of depression symptoms.

Depression - from Natural Standard
Depression or depressive disorder is an illness that involves the body, mood, and thoughts. Depression is considered a mood disorder. Imbalances in three neurotransmitters (brain chemicals), including serotonin, norepinephrine, and dopamine, are linked to depression. Depression affects the way a person eats and sleeps, the way one feels about oneself, and the way one thinks about life situations. Unlike normal emotional experiences of sadness, loss, or passing mood states, depressive disorders are persistent and can significantly interfere with an individual's thoughts, behavior, mood, activity, and physical health.