The main reasons for children being adopted in the United Kingdom had been unmarried mothers giving up their children for adoption and stepparents adopting their new partners children". United States
In the United States, foster care started as a result of the efforts of Charles Loring Brace. "In the mid 19th Century, some 30,000 homeless or neglected children lived in the New York City streets and slums." Brace took these children off the streets and placed them with families in most states in the country. Brace believed the children would do best with a Christian farm family. He did this to save them from "a lifetime of suffering" He sent these children to families by train, which gave the name The Orphan Train Movement. "This lasted from 1853 to the early 1890s  and transported more than 120,000 250,000? children to new lives." When Brace died in 1890, his sons took over his work of the Childrens Aid Society until they retired. The Childrens Aid Society created "a foster care approach that became the basis for the federal Adoption and Safe Families Act of 1997" called Concurrent Planning. This greatly impacted the foster care system.
Thus, EHS has been worked into conspiracy theories, but there is no scientific evidence that EHS has non-natural origins. Diagnosis
Classification
Exploding head syndrome is classified under other parasomnias by the 2014 International Classification of Sleep Disorders (ICSD, 3rd.Ed.) and is an unusual type of auditory hallucination in that it occurs in people who are not fully awake.According to ICD-10 and DSM-5 EHS is classified as either other specified sleep-wake disorder (codes:780.59 or G47.8) or unspecified sleep-wake disorder (codes: 780.59 or G47.9). Treatment
As of 2018, no clinical trials had been conducted to determine what treatments are safe and effective; a few case reports had been published describing treatment of small numbers of people (two to twelve per report) with clomipramine, flunarizine, nifedipine, topiramate, carbamazepine. Studies suggest that education and reassurance can reduce the frequency of EHS episodes. There is some evidence that individuals with EHS rarely report episodes to medical professionals. Epidemiology
There have not been sufficient studies to make conclusive statements about how common or who is most often affected. One study found that 14% of a sample of undergrads reported at least one episode over the course of their lives, with higher rates in those who also have sleep paralysis. History
Case reports of EHS have been published since at least 1876, which Silas Weir Mitchell described as "sensory discharges" in a patient. However, it has been suggested that the earliest written account of EHS was described in the biography of the French philosopher René Descartes in 1691.