Indian Journal of Dermatology
SPECIAL ARTICLE
Year
: 2011  |  Volume : 56  |  Issue : 5  |  Page : 490--493

Pharmacovigilance: Scope for a dermatologist


Bhanu Prakash1, Gurcharan Singh2,  
1 Department of Dermatology, Vydehi Hospital, Vydehi Institute of Medical Sciences and Research Centre, Bangalore, India
2 Department of Dermatology, Sri Devaraj Urs Medical College and Research Centre, Kolar, Karnataka, India

Correspondence Address:
Bhanu Prakash
110, 4th Cross, 5th C Main, Vijayanagar 2th Stage, Bangalore - 560 040
India

Abstract

Pharmacovigilance is defined as the science of detection, assessment, and prevention of adverse drug reactions in humans. Under-reporting of drug reactions is the major problem and has various reasons. The WHO has initiated the program of reporting all adverse drug reactions now co-ordinated by the Uppsala Monitoring Centre in Uppsala, Sweden, with oversight by an international board. This article presents in brief the relevance, functioning, importance, and the procedure of reporting adverse drug reactions. Dermatologists have the greatest opportunity in reporting various reactions that can happen as they come across majority of these drug reactions, prescribed by all sectors of the health system.



How to cite this article:
Prakash B, Singh G. Pharmacovigilance: Scope for a dermatologist.Indian J Dermatol 2011;56:490-493


How to cite this URL:
Prakash B, Singh G. Pharmacovigilance: Scope for a dermatologist. Indian J Dermatol [serial online] 2011 [cited 2021 May 13 ];56:490-493
Available from: https://www.e-ijd.org/text.asp?2011/56/5/490/87121


Full Text

 Introduction



We are all aware of the great thalidomide tragedy that occurred in early 1960s. Thalidomide was considered to be one of the greatest discoveries of those days. It was used in a myriad of conditions and in Germany, when pregnant woman complained of sleeplessness, thalidomide was prescribed. Subsequently many thousands of congenitally deformed infants were born as a result of exposure in-utero to an unsafe medicine. This forced the sixteenth World Health Assembly to adopt a resolution (WHA 16.36) [1] that reaffirmed the need for early action in regard to rapid dissemination of information on adverse drug reactions and led, later to creation of the WHO pilot research project for International Drug Monitoring in 1968.

From these beginnings emerged the practice and science of pharmacovigilance, defined as the science of detection, assessment, and prevention of adverse drug reactions (ADRs) in humans. [2]

The pilot project has developed into the WHO Program for International Drug Monitoring now co-ordinated by the Uppsala Monitoring Centre (UMC) in Uppsala, Sweden, with oversight by an international board.

The program has expanded to include over 108 countries. In many countries, regional reporting centers, interest groups, dedicated internal medicine, and pharmacology department units' drug and poison information centers and other non- governmental organizations have developed to report the ADRs. By July 2008, over 4 million cases were recorded. However, this figure represents only the tip of an iceberg.

The situation is India is very poor as far as the reporting of ADRs is considered. The nodal centre is situated in AIIMS, New Delhi. The program functioning has not been able to achieve the desired results. Many regional and zonal centers have yet to take shape.

Under-reporting of drug reactions is the major problem; reasons include lack of time and report forms, and the misconception that absolute confidence in the diagnosis of an adverse reaction is important. [3]

 Relevance of Pharmacovigilance



Before a product is marketed commercially, it goes through various phases of clinical trial to establish its safety and efficacy before its use in day-to-day practice. However, the clinical trials done have many limitations:



Strict criteria of inclusion and exclusion make it to be used in a very selective group of "otherwise normal patients." This is not so in our day-to-day practice as most of our patients would be having many other co- morbidities or on certain drugs already.Special groups such as children, pregnant woman, or old age population are not studied during the trials.Other factors causing drug reactions such as genetic factors, environmental factors, drug-drug interactions, drug-virus interactions, drug-disease interactions etc. may not have been studied during the clinical trials.Rarer reactions or chronic toxicities may not be detected until a very large number of patients are studied. For example, if a drug has a chance of causing serious drug induced hepatitis in 1 in 10,000 population, then a minimum of at least 30,000 people need to be treated to detect such a reaction. [4]Tests in animals are insufficient to predict human safety.

 The Purpose of Pharmacovigilance



Phamacovigilance is the science and activities relating to the detection, assessment, understanding, and prevention of adverse effects or any other possible drug-related problems. Recently, its concerns have been widened to include: [5],[6],[7],[8]



HerbalsTraditional and complementary medicinesBlood productsBiologicalsMedical devices, andVaccines.

The specific aims of pharmacovigilance are to:



Improve patient care and safety in relation to the use of medicines and all medical and paramedical interventionImprove public health and safety in relation to the use of medicinesContribute to the assessment of benefit, harm, effectiveness, and risk of medicines, encouraging their safe, rational and more effective (including cost-effective) use andPromote understanding, education, and clinical training of pharmacovigilance and its effective communication to the public. [9]

 Functioning of Pharmacovigilance



The headquarters of the WHO program is situated in Uppsala, Sweden and is co-ordinated by the Uppsala Monitoring Centre. [10] The principal function of the centre is to manage the international database of ADR reports received from national centers. The UMC has established standardized reporting by all National centers and facilitated communication between countries to promote rapid identification of signals. Another project at the UMC is the creation of an ADR monitoring system for herbal and traditional medicines.

The national centers in collaboration with the UMC have achieved a great deal in:



Collecting and analyzing case reports of ADRs,Distinguishing signals from background "noise",Making regulatory decisions based on strengthened signals, andAlerting prescribers, manufacturers, and the public to new risks of adverse structures.

Collecting spontaneous reports of suspected ADRs remains their core activity. Scope of activities of national centers has expanded to include communication of information about benefit, harm, and risk to practitioners, patients and the public. Certain centers have established active surveillance programs using record linkage.

 Role of the Hospitals and Academia



A number of institutions have developed adverse reaction and medication error surveillance systems in their centers. In the last decade or so, ADR monitoring was recognized as an essential quality assurance activity with most accreditation agencies such as national Accreditation Board for Hospitals, Joint Commission on Accreditation for Hospitals Organization, and Medical Council of India insisting upon its establishment.

 Role of the Industry



Recent advances in the technologies have helped the pharmaceutical industry to develop safer drugs. High regulatory standards set at national and international levels along with communication between the industry and the regulatory authorities have helped better information of the drugs available to the doctors, public, etc.

 Can Pharmacovigilance Prevent New Drug Tragedies from Developing?



Some of the examples of withdrawals from the market after it was approved for commercial use as a result of spontaneous reporting are listed in [Table 1]. [11] {Table 1}

Adverse drug reactions are the fourth to sixth leading cause of morbidity in United States of America. [12] More than 10% of hospital admissions are due to adverse drug reactions. [13] Some countries spend up to 15-20% of their hospital budget dealing with drug complications. [14]

Adverse cutaneous drug reactions are the most frequent of all manifestations of drug sensitivity, 24% of all adverse drug reactions in one study. [15]

Dermatologists have the greatest opportunity in reporting the various reactions that can happen as they come across majority of these drug reactions, prescribed by all sectors of health system such as public and private hospitals, general practitioners, nursing homes, retail dispensaries, and clinics for traditional practice.

The success or failure of any spontaneous reporting system depends on the active participation of reporters.

Dermatologists can and should take an active role in observing, detecting, and reporting unwanted and unexpected drug reactions.

In clinics and hospitals where pharmacovigilance centers are not functioning, the dermatologists should be educated about the process of reporting to the national drug information centre online. Alternatively, the dermatology association at the national level and also at regional level can also have an adverse drug reaction reporting system online in their websites where the doctor can report the event.

 What Should be Reported?





For "new" drugs - report all suspected reactions, including minor ones. (In many countries drugs are still considered "new" up to 5 years after marketing authorization.)For established or well-known drugs report all serious or unexpected (unusual) suspected ADRsReport if an increased frequency of a given reaction is observedReport all suspected ADRs associated with drug-drug, drug-food, or drug-food supplements (including herbal and complementary products) interactionsReport ADRs in special fields of interest such as drug abuse and drug use in pregnancy and during lactationReport when suspected ADRs are associated with drug withdrawalsReport ADRs occurring from overdose or medication errorReport when there is lack of efficacy or when suspected pharmaceutical defects are observed

 How to Report ADRs?



Local case report forms (CRF) should be obtained from the National Drug Regulatory Authority. Some countries have included CRF in their national formularies. [11]

A CRF should have at least four sections that should be completed.

Patient information



Patient identifierAge at time of event or date of birthGender andWeight

Adverse event or product problem



Description of event or problemDate of eventDate of reportRelevant tests/laboratory data (if available)Other relevant patient information/historyOutcomes attributed to adverse event

Suspected medication(s):



Name (INN and brand name)Dose, frequency, and route usedTherapy dateDiagnosis for useEvent abated after use stopped or dose reducedBatch numberExpiration dateEvent reappeared after reintroduction of the treatment andConcomitant medical products and therapy dates

Reporter



Name, address and telephone number andSpeciality and occupation

 Useful Websites





WHO www.who.int/medicines/

Section: quality assurance and safety: medicinesWHO Collaborating Centre for International Drug Monitoring (Uppsala Monitoring Centre) Web">www.who-umc.orgWeb site of Central Drugs Standard Control Organization. Directorate General of Health Services, Ministry of Health and Family Welfare, Government of India: http://cdsco.nic.in/

References

1Handbook of resolutions and decisions of the World Health Assembly and Executive Board, Vol 11948-1972. Clinical and pharmacological evaluation of drugs. Geneva: World Health Organization; 1973. p. WHA16.36.
2Available from: Available http://www.hsa.gov.sg/publish/hsaportal/en/health_products_regulation/safety_informati. [cited in 2010].
3Belton KJ, Lewis SC, Payne S, Rawlins MD, Wood SM. Attitudinal survey of adverse drug reaction reporting by medical practitioners in the United Kingdom. Br J Clin Pharmacol 1995;39:223-6.
4Strom BL. Pharmacoepidemiology. 2 nd ed. Chichester: John Wiley; 1994.
5Meyboom RH, Egberts AC, Gribnau FW, Hekster YA. Pharmacovigilance in perspective. Drug Safety 1999;21:429-47.
6Fraechia GN, Theofilatou M, editors. Legal aspects of medical devices: Study on regulatory mechanisms for safety control. Health Services Research. Amsterdam, Netherlands: IOS Press; 1993. p. 358-61.
7Mehta U, Milstien JB, Duclos P, Folb PI. Developing a national system for dealing with adverse events following immunization. Bull World Health Organ 2000;789:170-7.
8Craven BM, Stewart GT, Khan M. Chan TYK. Monitoring the safety of herbal medicines. Drug Safety 1997;179:209-15.
9Effective communications in Pharmacovigilance. The Erice Report. International Conference on Developing Effective Communications in pharmacovigilance, Erice, Sicily, 24-27 September 1997, at which a policy statement was drawn up known as the Erice Declaration.
10The importance of pharmacovigilance, safety monitoring of medicinal products. World Health Organ 2002;3:9-14.
11WHO/EDM/QSM/2002.2; Safety of Medicines A guide to detecting and reporting adverse drug reactions. Why health professionals need to take action. Geneva: World Health Organization 2002.
12Lazarou J, Pomeranz BH, Corey PN. Incidence of ADR in hospitalized patients: A meta-analysis of prospective studies. JAMA 1998;279:1000-5.
13Moore N, Lecointre D, Noblet C, Mabille M. Frequency and cost of serious adverse drug reactions in a department of general medicine. Br J Clin Pharmacol 1998;45:301-8.
14White T, Arakelian A, Rho JP. Counting the cost of drug-related adverse events. Pharmacoeconomics 1999;15:445-58.
15Bordet R, Gautier S, Le Louet H, Dupuis B, Caron J. Analysis of the direct cost of adverse drug reactions in hospitalized patients. Eur J Clin Pharmacol 2001;56:935-41.