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Catatonia is a complex syndrome, most commonly seen in people with underlying mood, such as major depressive disorder, or psychotic disorders, such as schizophrenia. [2] [3] People with catatonia have abnormal movement and behaviors, which vary from person to person and fluctuate in intensity within a single episode. [4]
The main cause is total necrosis of the cerebral neurons following loss of brain oxygenation. After brain death the patient lacks any sense of awareness; sleep-wake cycles or behavior, and typically look as if they are dead or are in a deep sleep-state or coma. Although visually similar to a comatose state such as persistent vegetative state ...
Organic personality disorder (OPD) or secondary personality change, is a condition described in the ICD-10 and ICD-11 respectively. It is characterized by a significant personality change featuring abnormal behavior due to an underlying traumatic brain injury or another pathophysiological medical condition affecting the brain.
Brief psychotic disorder—according to the classifications of mental disorders DSM-IV-TR and DSM-5—is a psychotic condition involving the sudden onset of at least one psychotic symptom (such as disorganized thought/speech, delusions, hallucinations, or grossly disorganized or catatonic behavior) lasting 1 day to 1 month, often accompanied by emotional turmoil.
The International Classification of Diseases (ICD) is an international standard diagnostic classification for a wide variety of health conditions. The ICD-10 states that mental disorder is "not an exact term", although is generally used "...to imply the existence of a clinically recognisable set of symptoms or behaviours associated in most cases with distress and with interference with ...
Prolonged grief disorder (PGD), also known as complicated grief (CG), [1] traumatic grief (TG) [2] and persistent complex bereavement disorder (PCBD) in the DSM-5, [3] is a mental disorder consisting of a distinct set of symptoms following the death of a family member or close friend (i.e. bereavement).
A decreased level of consciousness correlates to increased morbidity (sickness) and mortality (death). [5] Thus it is a valuable measure of a patient's medical and neurological status. In fact, some sources consider level of consciousness to be one of the vital signs. [3] [6]
The ICD has a broader scope than the DSM, covering overall health as well as mental health; chapter 6 of the ICD specifically covers mental, behavioral and neurodevelopmental disorders. Moreover, while the DSM is the most popular diagnostic system for mental disorders in the US, the ICD is used more widely in Europe and other parts of the world ...