The two classifications are similar and both include:

markedly disturbed and developmentally inappropriate social relatedness in most contexts (e.g., the child is avoidant or unresponsive to care when offered by caregivers or is indiscriminately affectionate with strangers);
the disturbance is not accounted for solely by developmental delay and does not meet the criteria for pervasive developmental disorder;
onset before five years of age (there is no age specified before five years of age at which RAD cannot be diagnosed);
a history of significant neglect;
an implicit lack of identifiable, preferred attachment figure.ICD-10 states in relation to the inhibited form only that the syndrome probably occurs as a direct result of severe parental neglect, abuse, or serious mishandling. DSM states in relation to both forms there must be a history of "pathogenic care" defined as persistent disregard of the childs basic emotional or physical needs or repeated changes in primary caregiver that prevents the formation of a discriminatory or selective attachment that is presumed to account for the disorder. For this reason, part of the diagnosis is the childs history of care rather than observation of symptoms. In DSM-IV-TR the inhibited form is described as persistent failure to initiate or respond in a developmentally appropriate fashion to most social interactions, as manifest by excessively inhibited, hypervigilant, or highly ambivalent and contradictory responses (e.g., the child may respond to caregivers with a mixture of approach, avoidance, and resistance to comforting or may exhibit "frozen watchfulness", hypervigilance while keeping an impassive and still demeanour).
treatment associated factors:
artificial rupture of membranes
placement of internal monitors (for example, internal scalp electrode or intrauterine pressure catheter)
manual rotation of fetal head

Diagnosis
Umbilical cord prolapse should always be considered a possibility when there is a sudden decrease in fetal heart rate or variable decelerations, particularly after the rupture of membranes. With overt prolapses, the diagnosis can be confirmed if the cord can be felt on vaginal examination. Without overt prolapse, the diagnosis can only be confirmed after a cesarean section, though even then it will not always be evident at time of procedure. Classification
There are three types of umbilical prolapse that can occur:
overt umbilical cord prolapse: descent of the umbilical cord past the presenting fetal part. In this case, the cord is through the cervix and into or beyond the vagina. Overt umbilical cord prolapse requires rupture of membranes. This is the most common type of cord prolapse. occult umbilical prolapse: descent of the umbilical cord alongside the presenting fetal part, but has not advanced past the presenting fetal part. Occult umbilical prolapse can occur with both intact or ruptured membranes. funic (cord) presentation: presence of the umbilical cord between the presenting fetal part and fetal membranes. In this case, the cord has not passed the opening of the cervix. In funic presentation, the membranes are not yet ruptured. Management
The typical treatment of umbilical cord prolapse in the setting of a viable pregnancy involves immediate delivery by the quickest and safest route possible. This usually requires cesarean section, especially if the woman is in early labor.