About 68% of unplanned cesarean section was reported to be due to the abnormal progress of labor among vertex presentations [ 2]. Labor abnormality can be encountered at all stages of labor as a prolonged latent first stage, active first stage disorder (protracted or arrested cervical dilatation or descent) and second stage disorder (prolonged or arrest of descent) [ 1].
Cases were identified when a woman was diagnosed to have one of the labor abnormalities at term (prolonged latent stage, active phase disorder, prolonged second stage, descent disorder and obstructed labor).
Preeclampsia is hypothesized to be a 2-stage disorder [ 73].
Unlike HAD, a late-stage disorder that we will describe in more detail in the next section, MMND may present at the beginning of HIV disease.
Some studies (Confavreux, 2006 b ; Kremenchutzky et al., 2006, Stankoff et al., 2007) have suggested that age is a key player (if not the only one) in the natural history of multiple sclerosis, leading to the concept of multiple sclerosis as a single-stage disorder with a chronic age-related neurodegeneration since the onset of the disease (Confavreux, 2006 a ).
If an infant's development becomes arrested at any of the earlier stages, mental disorders will most likely result from a libidinal fixation at that level.
In stage I, disordering of the crystalline structure occurs.
Research regarding the understanding of and appropriate treatment for early stage personality disorder is growing.
At the University of Rochester's Center for Future Health, researchers are using networks of video cameras and powerful computers to detect changes in behavior and coordination signaling early-stage neurological disorders.
Hongjun Song, a neuroscientist at the University of Pennsylvania, argued that the results mean that brain organoids could be useful for modeling the development of early-stage brain disorders in infants.
