HTR2A gene related symptoms and diseases

Description

Obsessive-compulsive disorder (OCD) is characterized by recurring obsessions and/or compulsions and has been estimated to affect nearly 5 million people in the United States (Karno et al., 1988). Evidence for a strong genetic component in OCD comes from twin studies, family genetics studies, and segregation analyses, as reviewed by Alsobrook et al. (2002).Zhang et al. (2002) suggested that hoarding is likely to be an evolutionarily conserved trait that, in times of adversity, was associated with increased survival and reproductive fitness. However, extreme forms of this trait are associated with marked disability and poor response to treatment (Black et al., 1998; Mataix-Cols et al., 1999).

Most common symptoms of OBSESSIVE-COMPULSIVE DISORDER; OCD

• Depressivity
• Anxiety
• Obsessive-compulsive behavior
• Tics
• Collectionism

SOURCES: MESH OMIM

Alternate names

MAJOR DEPRESSIVE DISORDER; MDD Is also known as unipolar depression

Most common symptoms of MAJOR DEPRESSIVE DISORDER; MDD

• Neoplasm
• Behavioral abnormality
• Depressivity
• Anxiety
• Abnormality of the liver

SOURCES: OMIM

Alternate names

ALCOHOL DEPENDENCE Is also known as alcoholism

Description

a disorder characterized by a pathological pattern of alcohol use that causes a serious impairment in social or occupational functioning.

Most common symptoms of ALCOHOL DEPENDENCE

• Seizures
• Behavioral abnormality
• Depressivity
• Hyperactivity
• Abnormality of the nervous system

SOURCES: OMIM

Alternate names

SCHIZOPHRENIA; SCZD Is also known as schizophrenia with or without an affective disorder

Description

Schizophrenia is a psychosis, a disorder of thought and sense of self. Although it affects emotions, it is distinguished from mood disorders in which such disturbances are primary. Similarly, there may be mild impairment of cognitive function, and it is distinguished from the dementias in which disturbed cognitive function is considered primary. There is no characteristic pathology, such as neurofibrillary tangles in Alzheimer disease (OMIM ). Schizophrenia is a common disorder with a lifetime prevalence of approximately 1%. It is highly heritable but the genetics are complex. This may not be a single entity.Schizophrenia and bipolar disorder (see {125480}) are generally considered to be separate entities, but patients who exhibit multiple symptoms of both disorders are often given the hybrid diagnosis schizoaffective disorder (Blacker and Tsuang, 1992). Genetic Heterogeneity of Schizophrenia with or without an Affective DisorderSCZD4 (OMIM ) is associated with variation in the PRODH gene (OMIM ); SCZD9 (OMIM ) with variation in the DISC1 gene (OMIM ); SCZD15 (OMIM ) with variation in the SHANK3 gene (OMIM ); SCZD16 (OMIM ) with a chromosome duplication involving the VIPR2 gene (OMIM ); SCZD17 (see {614332}) with variation in the NRXN1 gene (OMIM ); SCZD18 (OMIM ) with variation in the SLC1A1 gene (OMIM ); and SCZD19 (OMIM ) with variation in the RBM12 gene (OMIM ).For associations pending confirmation, see MAPPING and MOLECULAR GENETICS.

Most common symptoms of SCHIZOPHRENIA; SCZD

• Intellectual disability
• Microcephaly
• Behavioral abnormality
• Depressivity
• Dementia

SOURCES: OMIM