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1. the act of changing into something of different form or properties.
2. an unconscious defense mechanism by which the anxiety that stems from intrapsychic conflict is altered and expressed in a symbolic physical symptom such as pain, paralysis, loss of sight, or some other manifestation that has no organic or physiological basis.
3. manipulative correction of malposition of a fetal part during labor.
conversion disorder a somatoform disorder characterized by symptoms or deficits affecting voluntary motor or sensory functioning and suggesting physical illness but produced by conversion. Called also conversion reaction.

Patients' anxiety is “converted” into any of a variety of somatic symptoms such as blindness, deafness, or paralysis, none of which have any organic basis. The anxiety may be the result of an inner conflict too difficult to face, and symptoms are aggravated in times of psychological stress. Patients often exhibit remarkable lack of concern, called la belle indifférence, about their symptoms, no matter how serious.

From their symptoms, patients achieve both the primary gain of relief from their anxiety and a number of secondary gains such as support and attention from others and the chance to avoid unpleasant responsibilities. Symptoms are often increased at times of psychological stress. The symptoms often have an important symbolic relationship to the patient's unconscious conflict, such as incapacitating illness in those who cannot acknowledge dependency needs. Symptoms are neither intentionally produced nor feigned, are not limited to pain or sexual dysfunction, and may affect a part of the body the patient considers weak. One of the first observed examples of conversion disorder was combat fatigue, in which soldiers became paralyzed and could not participate in battle.

Treatment of conversion disorder aims at helping the patient resolve the underlying conflict. Under former classifications, this disorder was called a neurosis (hysterical neurosis, conversion type).


2. A defense mechanism conceptualized by Freud, building on the work of Briquet and Charcot, by which unconscious conflict or repressed thought is expressed symbolically, or somatically.
See also: somatoform disorder, conversion disorder, hysteria.
See also: lysogeny.
3. In virology, the acquisition by bacteria of a new property associated with the presence of a prophage.
See also: lysogeny.
[L. con-verto, pp. -versus, to turn around, to change]


/con·ver·sion/ (kon-ver´zhun) an unconscious defense mechanism by which the anxiety that stems from intrapsychic conflict is converted and expressed in somatic symptoms.


a. The act of converting.
b. The state of being converted.
2. A change in which one adopts a new religion, faith, or belief.
3. Something that is changed from one use, function, or purpose to another.
4. Law The unlawful appropriation of another's property.
5. The exchange of one type of security or currency for another.
6. Logic The interchange of the subject and predicate of a proposition.
7. Football An extra point or points scored after a touchdown, as by kicking the ball through the uprights or by advancing the ball into the end zone from the two-yard line or a similar short distance.
8. Psychiatry The development of physical symptoms, such as paralysis or sensory deficits, as a response to stress, conflict, or trauma.
9. The expression of a quantity in alternative units, as of length or weight.

con·ver′sion·al, con·ver′sion·ar′y (-zhə-nĕr′ē, -shə-) adj.


Etymology: L, convertere, to turn around
1 changing from one form to another; transmutation.
2 (in obstetrics) the correction of a fetal position during labor.
3 (in psychiatry) an unconscious defense mechanism by which emotional conflicts that ordinarily cause anxiety are repressed and transformed into symbolic physical symptoms that have no organic basis. Loss of sensation, paralysis, pain, and other dysfunctions of the nervous system are the most common somatic expressions of conversion.


Psychiatry An unconscious defense mechanism by which anxiety caused by intrapsychic conflict is converted and expressed in a somatically symbolic fashion Clinical Paralysis, pain, sensory loss


1. Synonym(s): transmutation.
2. An unconscious defense mechanism by which the anxiety that stems from an unconscious conflict is converted and expressed symbolically as a physical symptom; transformation of an emotion into a physical manifestation, as in conversion hysteria.
See: conversion hysteria
3. virology The acquisition by bacteria of a new property associated with presence of a prophage.
See also: lysogeny
[L. con-verto, pp. -versus, to turn around, to change]


1. the act of changing into something of different form or properties.
2. manipulative correction of malposition of a fetal part during labor.

conversion formulae
formulae for conversion of one numerical mode of expression into a different mode, e.g. avoirdupois to metric weight.
conversion ratio
a measure of activity of the thyroid gland; it expresses the proportion of the total radioactivity of the plasma, subsequent to the injection of radioactive iodine, which is bound to protein (protein-bound iodine test).

Patient discussion about conversion

Q. What are the common caloric conversions? Hi my new friends, help me to find out how does caloric expenditure affect weight loss? What are the common caloric conversions?

A. Hi my new friend. Welcome to this community. I have given here the caloric equivalents for your reference:

1 pound = 3500 kcal
1 gram fat = 9 kcal
1 gram carbohydrate = 4 kcal
1 gram protein = 4 kcal
1 gram alcohol = 7 kcal

How does caloric expenditure affect weight loss?
An individual creates a caloric deficit by walking one mile to and from work each day. Assuming a 100 calorie per mile caloric expenditure, how many weeks would it take to lose one pound?
1 lb = 3500 calories
2 miles per day x 5 days = 10 miles
10 miles x 100 calories = 1000 calories per week
3,500 calories ÷ 1000 = 3.5 weeks

This information is a fundamental for ACE certifications. Knowledge on this subject is required by our professionals.

Q. While in a conversation with anyone they have about a minute before I loose tract and intrest, Is this ADHD I always feel like I have to go full speed 24/7 and can never relax, sounds strange I know but it seems to be catching up with me.

A. not necessarily...i see that you are 31. those symptoms are new? if so- thee are other conditions that might cause them. hyperthyroid can get you in that state too. so it might be a good idea to go and get checked up.

More discussions about conversion
References in periodicals archive ?
First, the conversion rate was slightly higher in Collaborative versus control hospitals during the preperiod.
Table 1: Hospital Characteristics by Group Control Hospitals Collaborative Hospitals (N= 95) All (N=125 Mean (SD) Mean (SD) Teaching hospital, N(%) 46 (48) 16 (13) Transplant hospital, N(%) 55 (58) 24 (19) Preperiod conversion rate 0.
Over the years, SMS has evolved a process for improving conversion rate.
The conclusion is 'loud and clear' - E-commerce sites using the Progress EasyAsk platform are experiencing higher conversion rates than sites using other search platforms," said Larry Harris, vice president and general manager of Progress EasyAsk products.
If you want to increase your sales conversion rates, you need to deliver the right information at the right moment that will speed buying decisions and make purchasing easy," said Sid Kerber, President of The Catalog Consultancy, of Boca Raton, Florida (www.
By putting the contract execution process online, companies are able to significantly reduce the number of approvals that fall out of the sales funnel and dramatically improve their conversion rates.
This automation not only speeds the process but reduces cycle times and increases sales capacity and conversion rates.
The conversion rates for the two Notes are adjusted in connection with the regular quarterly dividend of $0.
PDL) (NASDAQ: PDLI) today announced adjustments to the conversion rates for:
Each How Britain Shops report provides visitor and main user share data, conversion rates, customer loyalty rates, reasons for loyalty and key competitors for all major retailers in the sector.
However, the increasing cost of acquiring customers forces online retailers to boost average order size, improve conversion rates, and reduce shopping cart abandonment or face becoming dependant on repeat purchasers.
Elastic Path Optimize[TM] offers intelligent search engine optimization tools used to connect web searchers with the most relevant products possible, boosting overall conversion rates and minimizing customer acquisition costs.