Foam is an efficient thermal insulator, so the temperature of the oil can become difficult to control. The presence of air bubbles in the fluid can lead to excessive oxidation, cavitation, the reduction of lubricating properties of the oil and hydraulic system failure. Causes The causes of foaming are many. The most common include: Water contamination
Psychosis refers to an abnormal condition of the mind described as involving a loss of contact with reality. People with psychosis are described as psychotic. People experiencing psychosis may exhibit some personality changes and thought disorder.
Although real to the person experiencing psychosis, psychotic experiences are not experienced as real to others. In fact, as a medical term, psychosis refers to a loss of contact with reality, or difficulty telling what is real from what is not real. Psychosis is more common than many people think.