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Items: 3

1.

Anxiety

Human personality is shaped by genetic and environmental factors, and evidence suggests that the genetic component is highly complex, polygenic, and epistatic. Genetic factors are thought to contribute to 40 to 60% of trait variance. Molecular genetics has tried to identify specific genes for quantitative traits, called quantitative trait loci (QTLs). The QTL concept suggests that complex personality traits or dimensions are not attributable to single genes, but to multiple interacting genes (Reif and Lesch, 2003). Fullerton et al. (2003) stated that psychologists were in agreement that the wide variation in human personalities can be explained by a small number of personality factors, including neuroticism (a measure of emotional stability), which manifests at one extreme as anxiety, depression, moodiness, low self-esteem, and diffidence. They cited a number of studies that had described a relationship between high scores on measures of neuroticism and major depressive disorder. They also noted that theoretical studies had suggested that large samples of randomly ascertained sibs could be used to ascertain phenotypically extreme individuals and thereby increase power to detect genetic linkage in complex traits. See also panic disorder (PAND1; 167870), which is a subtype of anxiety disorder. [from OMIM]

MedGen UID:
335849
Concept ID:
C1842981
Disease or Syndrome; Mental or Behavioral Dysfunction
2.

Psychosis

Psychotic disorders are severe mental disorders that cause abnormal thinking and perceptions. People with psychoses lose touch with reality. Two of the main symptoms are delusions and hallucinations. Delusions are false beliefs, such as thinking that someone is plotting against you or that the TV is sending you secret messages. Hallucinations are false perceptions, such as hearing, seeing, or feeling something that is not there. Schizophrenia is one type of psychotic disorder. People with bipolar disorder may also have psychotic symptoms. Other problems that can cause psychosis include alcohol and some drugs, brain tumors, brain infections, and stroke. Treatment depends on the cause of the psychosis. It might involve drugs to control symptoms and talk therapy. Hospitalization is an option for serious cases where a person might be dangerous to himself or others.  [from MedlinePlus]

MedGen UID:
19568
Concept ID:
C0033975
Mental or Behavioral Dysfunction
3.

Mental disorder

Mental disorders include a wide range of problems, including. -Anxiety disorders, including panic disorder, obsessive-compulsive disorder, post-traumatic stress disorder, and phobias. -Bipolar disorder. -Depression. -Mood disorders. -Personality disorders. -Psychotic disorders, including schizophrenia. There are many causes of mental disorders. Your genes and family history may play a role. Your life experiences, such as stress or a history of abuse, may also matter. Biological factors can also be part of the cause. A traumatic brain injury can lead to a mental disorder. A mother's exposure to viruses or toxic chemicals while pregnant may play a part. Other factors may increase your risk, such as use of illegal drugs or having a serious medical condition like cancer. Medications and counseling can help many mental disorders. .  [from MedlinePlus]

MedGen UID:
14047
Concept ID:
C0004936
Mental or Behavioral Dysfunction
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