Bruxism during the day. The ICDS-R defined sleep bruxism as "a stereotyped movement disorder characterized by grinding or clenching of the teeth during sleep", classifying it as a parasomnia. The second edition (ICSD-2) however reclassified bruxism to a "sleep related movement disorder" rather than a parasomnia. Alternatively, bruxism can be divided into "primary bruxism" (also termed "idiopathic bruxism"), where the disorder is not related to any other medical condition, or "secondary bruxism", where the disorder is associated with other medical conditions. Secondary bruxism includes iatrogenic causes, such as the side effect of prescribed medications. Another source divides the causes of bruxism
Involuntary euthanasia McKim, a New York physician and author published a book titled “Heredity and Human Progress.” This book suggested that people with severe inherited defects, including mentally handicapped people, epileptics, habitual drunks and criminals, should be given a quick and painless death by carbonic gas. In January 1938, the National Society for the Legalization of Euthanasia was formed, and was renamed the Euthanasia Society of America (ESA) later that year. It advocated for the legalization of euthanasia in the United States, primarily by lobbying state legislators. Many prominent ESA members advocated for involuntary euthanasia of people with mental disabilities, including Ann