The atypical antipsychotics (AAP; also known as second generation antipsychotics (SGAs)) are a group of antipsychotic drugs (antipsychotic drugs in general are also known as major tranquilizers and neuroleptics, although the latter is usually reserved for the typical antipsychotics) used to treat psychiatric conditions.
Atypical facial pain (AFP) is a type of chronic facial pain which does not fulfill any other diagnosis.
Atypical teratoid rhabdoid tumor (AT/RT) is a rare tumor usually diagnosed in childhood. Although usually a brain tumor, AT/RT can occur anywhere in the central nervous system (CNS) including the spinal cord.
Atyrau (Kazakh: Атырау, Atıraw, اتىراۋ, pronounced [ɑtərɑ́w]; Russian: Атырау [ɐtɨˈraʊ]), known as Guryev (Russian: Гурьев [ˈɡurʲjɪf]) until 1991, is a city in Kazakhstan, and the capital of Atyrau Region.
The Atyap people, also known as the Kataf by the Hausa people, are an ethnic group that occupy part of the Zangon-Kataf Local Government Area of Kaduna State, Nigeria.
Atypical hemolytic uremic syndrome (aHUS) is an extremely rare, life-threatening, progressive disease that frequently has a genetic component.
Atyria lemonia is a species of moth of the family Geometridae. It is found in Ecuador.
Atybe is a genus of longhorn beetles of the subfamily Lamiinae, containing the following species:
Atypical ductal hyperplasia, abbreviated ADH, is the term used for a benign lesion of the breast that indicates an increased risk of breast cancer.
Atypical polypoid adenomyoma, abbreviated APA, is a rare uncommon benign tumour of the uterus.