Also found in: Dictionary, Thesaurus, Legal, Idioms, Encyclopedia, Wikipedia.


a need for something; sometimes used as a synonym for drug dependence.
chemical dependence (drug dependence) see drug dependence.
emotional dependence psychological dependence.
physical dependence (physiological dependence) drug dependence in which the drug is used to prevent withdrawal symptoms or in which it is associated with tolerance, or both.
psychoactive substance dependence drug dependence.
psychological dependence drug dependence in which the drug is used to obtain relief from tension or emotional discomfort; called also emotional dependence.
substance dependence drug dependence.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


(dĕ-pen'dents), Avoid the misspelling dependance.
The quality or condition of relying on, being influenced by, or being subservient to a person, object, or substance, thus reflecting a particular need.
[L. dependeo, to hang from]
Farlex Partner Medical Dictionary © Farlex 2012


Psychiatry A CNS adaptation to the persistent presence of a sedative. See Substance dependence, Tobacco dependence. Cf Addiction Substance abuse A psychological or physiologic need to use a substance–usually a narcotic on a chronic and repeated basis; dependence on the drug may become overwhelming, compelling the user to sacrifice quality of life for the drug. See Addict. Cf Addiction.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.


The quality or condition of relying on, being influenced by, or being subservient to a person, substance, or object reflecting a particular need.
[L. dependeo, to hang from]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


A state in which a person requires a steady concentration of a particular substance to avoid experiencing withdrawal symptoms.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.


(dĕ-pen'dĕns) Avoid the misspelling dependance.
The quality or condition of relying on, being influenced by, or being subservient to a person, object, or substance.
[L. dependeo, to hang from]
Medical Dictionary for the Dental Professions © Farlex 2012

Patient discussion about dependence

Q. Is there any depression which is dependent on something. is there any depression which is dependent on something and whenever that thing strikes the depression arrives?

A. Well Anthony, almost all depression had some known dependency on something. But its regular dependency and frequency increment or decrement will differ a lot. One kind of depression like seasonal affective disorder (SAD) is where every individual remains depressed every year at the same time, which may be due to seasonal changes like winter and summer. In SAD the depression arrives every year at the same time and it seems to be arrival of depression dependent on the season.

Q. What is the difference between alcoholism, alcohol abuse and alcohol dependent?

A. Alcoholism is the high carve for drinking without caring for negative results it will have on physical, mental, emotional and social life. A binge drinker who continues to drink even though the problem has started in his normal life will lead to alcohol abuse and he may start the journey for alcoholism. In alcohol dependence the drinker steps up from the alcohol abuse and the crave increases in spite of the biggest problem on head. We can say that alcohol dependence is alcoholism.

Q. Does anyone have ideas for ways to overcome concentration problems without depending on medications? I'm reallllllly trying hard to study for my final exams and my ADD seems to bother me every time I touch the desk. Sometimes my thoughts fly out when I only think of how much I still have to study today!!! please- help if you can... I really don't want to start with meds...

A. Omega-3 fatty acids, phosphatidylserine, zinc and magnesium may have benefits with regard to ADD symptoms. i take omega-3 fatty acids every day for the past year and it helped me go threw a ruff year of studying.

More discussions about dependence
This content is provided by iMedix and is subject to iMedix Terms. The Questions and Answers are not endorsed or recommended and are made available by patients, not doctors.
References in periodicals archive ?
If someone had two or more adverse outcomes (smoking dependence, binge eating, antidepressant use, and a lower quality of life) the probability they had suffered bullying and/or sexual abuse ranged between 60-85 per cent.
Taken together, these studies suggest that orexins provide a potential treatment target for reducing alcohol relapse drinking and improving long-term prognosis in patients with alcohol dependence.[5],[7]
Reportedly, this CHMP positive opinion for Buvidal is based on a comprehensive clinical programme with seven clinical studies, including a randomised, double-blind, double-dummy, active controlled phase 3 study in 428 patients with opioid dependence. Results from this study demonstrated that Buvidal provided improved treatment outcomes compared to daily standard treatment with sublingual buprenorphine/naloxone.
Male patients of alcohol dependence between age group 20 and 60 years.
Since the 1950s, the term "visual dependence" has been used to describe inappropriate reliance on visual cues in postural behavior in situations where it might be better to use somatosensory or vestibular inputs for balance.
Higher nicotine concentration in e-cig liquid, as well as use of advanced second-generation e-cigs, which deliver nicotine more efficiently than earlier 'cigalikes,' predicted dependence. Consumers who had used e-cigs longer also appeared to be more addicted, Medical Express reported.
The investigators found that the presence in childhood or adolescence of any four of nine risk factors had an area under the curve of 80% for persistent substance dependence as an adult.
A few studies mentioned the psychotherapy effect to treat zolpidem dependence, [sup][7] and there was no standard guideline for treatment of zolpidem dependence.
Zubsolv is licensed in the US for the treatment of opioid dependence and used as part of a comprehensive treatment plan, which includes counselling and psychosocial support.
From the earlier national epidemiological survey, it was noted that the rate of lifetime dependence was more than 40% among individuals who started drinking at 14 years of age or younger compared to 10% among those who started drinking at 20 years of age or older and the odds of dependence decreased by 14% with each increasing year of age at the onset of use.[2] Another study also found that early onset of drinking enhances the risk of further heavy drinking in adulthood; however, the association was not statistically significant.[3]