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.
Endocrine glands have no ducts, but rather secrete their hormones directly into the bloodstream to produce effects in distant tissues. Groups of secretory cells are therefore situated near capillaries. The gland is surrounded by a connective tissue capsule, projections of which may extend into the gland as trabeculae.here are two major components of any exocrine gland: Parenchyma, which is the epithelial component of the gland consisting of the secretory units and ducts. Stroma, which is the connective tissue component of the gland (for support), as well as blood vessels and nerves.