Because RAD is lacking a background of significant research due to its rarity, the causes and risk factors as to why children develop reactive attachment disorder are not entirely conclusive. Some examples of causes that have been linked to possibly impacting the development of RAD include:
Central Nervous System (Brain and Spinal Cord) and Peripheral Nervous System (Cranial Nerves, Spinal Nerves, and Ganglia). This is the control center for the entire nervous system.All body sensations must be relayed from receptors to the CNS if they are to be interpreted and acted on. All of the nerve impulses that stimulate muscles to contract and glands to secrete must also originate in the CNS.
CCK stimulating vagus nerve. CCK stimulate vagus nerve to send signals to hypothalamus-cells in hypothalamus release a neurotransmitter that is the shorter version of CCK --CCK in intestines cannot cross the blood-brain barrier-but it can stimulate cells in hypothalamus to release cells almost like itself. î î î.