Insomnia
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  Insomnia



Insomnia

    Disorders characterized by impairment of the ability to initiate or maintain sleep. This may occur as a primary disorder or in association with another medical or psychiatric condition.

RELATED TERMS
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Impairment
A defect in organ function or whole body system, which may be temporary or permanent (eg. hemiplegia).

Ability
The ability to acquire general or special types of knowledge or skill.

Association
1. In dysmorphology (the study of birth defects), the nonrandom occurrence in two or more individuals of a pattern of multiple anomalies (birth defects) not known to be a malformation syndrome (such as Down syndrome), a malformation sequence (of events) or what is called a polytopic field defect (in which all of the defects are concentrated in one particular area of the body). An example of an association in dysmorphology is the VACTERL association of birth defects. 2. In genetics, the occurrence together of two or more characteristics more often than would be expected by chance alone. An example of association involves a feature on the surface of white blood cells called HLA (HLA stands for human leukocyte antigen). A particular HLA type, HLA type B-27, is associated with an increased risk for a number of diseases including ankylosing spondylitis. The extent of the association is enormous. Ankylosing spondylitis is 87 times more likely to occur in people with HLA B-27 than in the general population.

Medical
Pertaining to Medicine.

Psychiatric
Pertaining to the medical specialty that deals with mental disorder.

Condition
The term "condition" has a number of biomedical meanings including the following: 1.An unhealthy state, such as in "this is a progressive condition." 2.A state of fitness, such as "getting into condition." 3.Something that is essential to the occurrence of something else; essentially a "precondition." 4.As a verb: to cause a change in something so that a response that was previously associated with a certain stimulus becomes associated with another stimulus; to condition a person, as in behavioral conditioning.



SIMILAR TERMS
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PREVIOUS AND NEXT TERMS
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Iritis
An inflammation of the iris.

Impotence
An abnormal physical or psychological state in a male characterized by inability to copulate because of failure to have or maintain an erection.

Indigestion
Impaired digestion, especially after eating.

Infertility
The diminished or absent ability to conceive or produce an offspring while sterility is the complete inability to conceive or produce an offspring.

Influenza
An acute viral infection involving the respiratory tract. It is marked by inflammation of the nasal mucosa, the pharynx, and conjunctiva, and by headache and severe, often generalized, myalgia.

Insomnia

Ia
"Immune response-associated" proteins, found on B cells and antigen-presenting cells of mice; an old term now replaced with MHC (major histocompatibility complex) class II molecules.

Idiotype
The combined antigenic determinants (idiotopes) found on antibodies of an individual that are directed at a particular antigen; such antigenic determinants are found only in the variable region.

Immediate-type hypersensitivity
Hypersensitivity tissue reaction occurring within minutes after the interaction of antigen and antibody.

Immune adherence
The adherence of particulate antigen coated with C3b to tissue having cells with C3b receptors.

Immune complex
Antigen bound to antibody.

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