Obsolete medical terms

thumb|300px|Engraving of the eighth print of ''A Rake's Progress, depicting inmates at Bedlam Asylum, by [[William Hogarth]] Insanity, madness, lunacy, and craziness are behaviors caused by certain abnormal mental or behavioral patterns. Insanity can manifest as violations of societal norms, including a person or persons becoming a danger to themselves or to other people. Conceptually, mental insanity also is associated with the biological phenomenon of contagion (that mental illness is infectious) as in the case of copycat suicides. In contemporary usage, the term insanity is an informal, un-

thumb|The Idiot by Evert Larock (1892)

thumb|Story of Onan

thumb|upright|Samuel A. Cartwright (1793–1863) Drapetomania was a proposed mental illness that, in 1851, American physician Samuel A. Cartwright hypothesized as the cause of enslaved Americans fleeing captivity. This hypothesis was based on the belief that slavery was such an improvement upon the lives of slaves that only those suffering from some form of mental illness would wish to escape.

Deaf-mute is a term which was used historically to identify a person who was either deaf and used sign language or both deaf and could not speak. The term continues to be used to refer to deaf people who cannot speak an oral language or have some degree of speaking ability, but choose not to speak because of the negative or unwanted attention atypical voices sometimes attract. Such people communicate using sign language. Some consider it to be a derogatory term if used outside its historical context; the preferred term today is simply deaf.

thumb|MRI of man with pituitary apoplexy Apoplexy () refers to the rupture of an internal organ and the associated symptoms. Informally or metaphorically, the term apoplexy is associated with being furious, especially as "apoplectic". Historically, it described what is now known as a hemorrhagic stroke, typically involving a ruptured blood vessel in the brain; modern medicine typically specifies the anatomical location of the bleeding, such as cerebral apoplexy, ovarian apoplexy, or pituitary apoplexy.

The term imbecile was once used by psychiatrists to denote a category of people with moderate to severe intellectual disability, as well as a type of criminal. The word arises from the Latin word imbecillus, meaning weak, or weak-minded. It originally referred to people of the second order in a former and discarded classification of intellectual disability, with a mental age of three to seven years and an IQ of 25–50, above "idiot" (IQ below 25) and below "moron" (IQ of 51–70). In the obsolete medical classification (ICD-9, 1977), these people were said to have "moderate mental retardation" or

term once used in psychiatry to denote mild intellectual disability

Dipsomania is a historical term describing a medical condition involving an uncontrollable craving for alcohol or other drugs. In the 19th century, the term dipsomania was used to refer to a variety of alcohol-related problems, most of which are known today as alcohol use disorder. Dipsomania is occasionally still used to describe a particular condition of periodic, compulsive bouts of alcohol intake. The idea of dipsomania is important for its historical role in promoting a disease theory of chronic drunkenness. The word comes from Greek dipso- (from 'thirst') and mania ( 'madness, frenzy, co

Periodontosis is an obsolete term that was used to describe what was once thought to be certain type of unique and distinguishable chronic periodontal disease that manifested as degenerative bony changes without concomitant inflammation. Although utilized for more than 50 years, the term has since been dropped in favor of a more contemporary disease classification for periodontal disease.

obsolete medical term for schizophrenia

species of virus

historical classification of nephritis

alleged mental illness linked to scientific racism

thumb|alt=From The Women's Library: Suffrage Collection; Created by the Suffrage Atelier|A suffragist postcard depicting a lunatic, symbolized by a [[moon]] Lunatic is a term referring to a person who is seen as mentally ill, dangerous, foolish, or crazy—conditions once attributed to "lunacy". The word derives from lunaticus meaning "of the moon" or "moonstruck".

Early name for AIDS

human disease

historic mental disorder consisting of abnormal emotions and behaviours without psychosis

outdated and offensive term for Down syndrome

lead poisoning outbreak in Devon, England

pejorative slur for one with a mental disability

An anodyne is a drug used to lessen pain through reducing the sensitivity of the brain or nervous system. The term was common in medicine before the 20th century, but such drugs are now more often known as analgesics or painkillers.