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.
Psychosis occurs in a number of serious mental illnesses and not just schizophrenia, eg depression, bipolar disorder (manic-depressive illness), puerperal psychosis and sometimes with drug and alcohol abuse. It can also occur in a number of neurological conditions and with drugs not associated with abuse.Psychosis interferes with the ability to function and can be very debilitating. Disabling symptoms include delusions and hallucinations 1  : A delusion is a false, fixed, strange, or irrational belief that is firmly held. Depression can cause psychosis and all forms of mental illness have a risk of suicide, not just depression. 2  There are a number of forms of self-harm assessment.