Introduction
Informed consent lies at the heart of the modern doctor–patient relationship and represents a fundamental transformation in medical jurisprudence. Historically, medical practice was largely paternalistic, with physicians making decisions on behalf of patients on the assumption that the doctor knew what was best. Modern law and medical ethics, however, increasingly recognise the patient’s autonomy and right to make informed decisions concerning their own body and healthcare.
Informed consent therefore requires that a competent patient receive adequate information regarding the nature and purpose of a proposed intervention, its material risks and expected benefits, and reasonable alternatives, and voluntarily decide whether to undergo it. Consent is consequently not merely a signed document but a continuing process of communication and decision-making.
Performing a medical intervention without valid consent may constitute an infringement of bodily autonomy and, depending on the circumstances and applicable law, may give rise to civil or criminal liability.
Historical Foundations: From Battery to Patient Autonomy
unauthorisedThe modern legal concept of informed consent developed significantly in early twentieth-century American jurisprudence. In Schloendorff v. Society of New York Hospital (1914), Justice Benjamin Cardozo articulated the principle that every competent adult has the right to determine what may be done to their own body. An unauthorized medical intervention could therefore constitute an unlawful touching and, in appropriate circumstances, amount to battery. The decision became an important foundation for the modern doctrine of bodily autonomy and patient self-determination.
The importance of voluntary consent was reinforced internationally following the unethical medical experiments conducted during the Second World War. The Nuremberg Code (1947) established voluntary consent as an essential requirement for human experimentation.
Subsequently, instruments such as the Declaration of Helsinki and the Belmont Report further developed principles of informed consent, respect for persons, risk–benefit assessment, and protection of research participants.
These developments strengthened the principle that individuals should receive appropriate information, be free from coercion or undue influence, and retain the right to refuse or withdraw from participation in treatment or research, subject to applicable legal and ethical limitations.
Evolution of Disclosure Standards: Canterbury to Montgomery
The law governing the extent of information that must be disclosed to patients has evolved from a predominantly professional-centred model toward a more patient-centred approach.
The Reasonable Patient Standard: Canterbury v. Spence (1972)
In Canterbury v. Spence (1972), a United States court significantly influenced the law of informed disclosure by moving away from an exclusively professional standard.
emphasisedUnder the traditional approach, the adequacy of disclosure was largely determined by accepted medical practice and professional opinion. Canterbury emphasized instead the patient’s right to make an informed choice and required disclosure of risks that a reasonable person in the patient’s position would consider significant in deciding whether to undergo treatment.
The decision thus reduced the physician’s unilateral control over determining what information was relevant to the patient’s decision.
The Patient-Centred Approach: Montgomery v. Lanarkshire Health Board (2015)
A comparable development occurred in the United Kingdom in Montgomery v. Lanarkshire Health Board (2015). The Supreme Court of the United Kingdom rejected an approach based solely on professional medical opinion, placing patient autonomy at the forefront.
The Court held that doctors must exercise reasonable care to ensure patients are informed of material risks, as well as reasonable alternative or variant treatments.
A risk is material if:
- A reasonable person in the patient’s circumstances would likely attach significance to it; or
- The doctor knows—or reasonably ought to know—that the specific patient would attach significance to it.
Montgomery thus represents a decisive shift from professional paternalism toward meaningful patient participation in healthcare decisions.
The Indian Landscape: Constitutional Basis and Judicial Development
In India, informed consent is closely connected with the constitutional protection of life and personal liberty under Article 21 of the Constitution of India.
Judicial interpretation of Article 21 has expanded the concept of personal liberty to encompass dignity, bodily integrity, and aspects of individual autonomy. Within this constitutional framework, informed consent has acquired increasing importance in medical treatment and research.
Legal and Professional Framework
2019,The professional conduct of registered medical practitioners is governed by the regulatory framework established under the National Medical Commission Act, 2019 and applicable professional-ethical regulations.
2019,In addition, the Consumer Protection Act, 2019 provides a mechanism through which patients may seek redressal in appropriate cases involving deficiency in medical services.
Failure to obtain valid consent may, depending on the facts and resulting injury, become relevant to a claim of medical negligence or deficiency in service.
DrSamira Kohli v. Dr. Prabha Manchanda (2008)
DrA landmark Indian decision on informed consent is Samira Kohli v. Dr. Prabha Manchanda (2008). The patient had consented to a diagnostic procedure but, while under anaesthesia, underwent a more extensive surgical intervention.
The Supreme Court of India emphasised several important principles:
- Real and voluntary consent: Consent must be genuine, voluntary, and based on adequate information.
- Specific consent: Consent given for one diagnostic or therapeutic procedure does not ordinarily authorise a substantially different or additional procedure.
- Emergency exception: An additional intervention may be justified without separate consent where an immediate and serious threat to life or health makes such intervention necessary and obtaining further consent is impracticable.
- Adequate disclosure: The patient should receive sufficient information regarding the nature and purpose of the proposed treatment, its significant risks, and available alternatives to enable an informed decision.
The Court did not adopt the Canterbury approach in its entirety. Instead, it emphasised a practical doctrine of “real consent”, requiring disclosure of information necessary for a meaningful decision without imposing an unrealistic obligation to disclose every remote or insignificant possibility.
The absence of informed consent may also become relevant to a medical-negligence claim where the patient suffers injury and the failure to disclose material information forms part of the alleged breach of duty.
Comparative Analysis and Contemporary Challenges
Contemporary medical law in jurisdictions such as the United Kingdom, Canada, Australia, and the United States has increasingly moved toward patient-centred decision-making, emphasising autonomy, material risks, reasonable alternatives, and individualised disclosure.
India has likewise recognised patient autonomy but has generally adopted a more pragmatic approach that seeks to balance individual rights with the realities of medical practice, professional judgement, emergencies, and healthcare limitations.
Modern healthcare has also created new challenges for the doctrine of informed consent.
Digital Healthcare and Telemedicine
The expansion of telemedicine has required traditional consent principles to be adapted to remote consultations.
The Telemedicine Practice Guidelines, 2020, recognise the need for appropriate consent and documentation in telemedicine practice, thereby reinforcing the importance of maintaining transparency and accountability even when the doctor and patient are not physically present in the same location.
Protection of Vulnerable Research Participants
The New Drugs and Clinical Trials Rules, 2019, provide safeguards for participants in clinical research and, in specified circumstances, require enhanced documentation and recording of the informed-consent process.
These safeguards seek to minimise coercion, exploitation, and misunderstanding and to strengthen the evidentiary record of consent.
End-of-Life Decision-Making
In Common Cause v. Union of India (2018), the Supreme Court recognised the legal significance of advance directives, commonly referred to as “living wills”, within the framework governing end-of-life medical decisions.
This development reflects the broader principle that autonomy may include the ability to communicate healthcare preferences in advance, subject to the legal safeguards established by the Court and applicable law.
Conclusion: From Compliance to Partnership
Informed consent should never be reduced to a signature on a consent form. It is fundamentally a process through which patients receive meaningful information, understand their choices, ask questions, and voluntarily participate in decisions concerning their bodies and health.
The historical movement from medical paternalism to patient autonomy reflects a broader transformation in medical jurisprudence—from physician authority toward shared decision-making and respect for human dignity.
Properly implemented, informed consent strengthens trust, protects bodily integrity, improves communication, and transforms the doctor–patient relationship from one based on authority and compliance into a partnership founded on autonomy, transparency, dignity, and mutual respect.
