Definition: In typical mild, moderate, or severe depressive episodes, the patient suffers from lowering of mood, reduction of energy, and decrease in activity. Capacity for enjoyment, interest, and concentration is reduced, and marked tiredness after even minimum effort is common. Sleep is usually disturbed and appetite diminished. Self-esteem and self-confidence are almost always reduced and, even in the mild form, some ideas of guilt or worthlessness are often present. The lowered mood varies little from day to day, is unresponsive to circumstances and may be accompanied by so-called somatic symptoms, such as loss of interest and pleasurable feelings, waking in the morning sev ...[+++]eral hours before the usual time, depression worst in the morning, marked psychomotor retardation, agitation, loss of appetite, weight loss, and loss of libido. Depending upon the number and severity of the symptoms, a depressive episode may be specified as mild, moderate or severe. | single episodes of:depressive reaction | psychogenic depression | reactive depression

high air pressure from rapid descent in water reduction in atmospheric pressure while surfacing from:deep-water diving | underground | residence or prolonged visit at high altitude as the cause of:anoxia | barodontalgia | barotitis | hypoxia | mountain sickness | sudden change in air pressure in aircraft during ascent or descent

Effect of air pressure and water pressure

Effects of air pressure and water pressure

Other effects of air pressure and water pressure

Accident due to high or low air pressure or changes in air pressure due to diving