Legal Status and Rights of Persons of Unsound Mind and Drunken Persons in India

Key Takeaways

• A person suffering from mental illness or unsoundness of mind does not lose legal personality merely because of the condition. Such a person can continue to possess property, inherit assets, access courts and enjoy other legal rights, subject to specific rules relating to legal capacity.
• Indian law generally examines whether the person was capable of understanding a particular act at the relevant time. Therefore, a person ordinarily of unsound mind may validly enter into a contract or make a will during a lucid interval.
• Under Sections 11 and 12 of the Indian Contract Act, 1872, a person must be capable of understanding the contract and forming a rational judgment about its effect on personal interests. Severe drunkenness can temporarily destroy contractual capacity.
• Section 22 of the Bharatiya Nyaya Sanhita, 2023 provides protection from criminal liability where unsoundness of mind makes a person incapable of knowing the nature of the act or that it is wrong or contrary to law.
• Sections 23 and 24 of the Bharatiya Nyaya Sanhita distinguish involuntary intoxication from voluntary intoxication. Involuntary intoxication may provide a defence in appropriate circumstances, whereas voluntary drunkenness generally does not excuse criminal conduct.
• The Mental Healthcare Act, 2017 follows a rights-based approach and recognises important rights concerning treatment, dignity, confidentiality, community living, legal aid and protection against cruel or degrading treatment.
• Modern Indian law increasingly focuses on autonomy, legal capacity and supported decision-making rather than treating every person with mental illness as legally incapable.

The legal status of persons traditionally described as “lunatics” and drunken persons is an important topic in jurisprudence because it illustrates the difference between legal personality and legal capacity.

Every human being is ordinarily recognised as a legal person. Mental illness, unsoundness of mind or intoxication does not automatically take away this status. However, the ability of a person to enter into contracts, make a will, incur criminal liability or take certain legally binding decisions may depend upon the person’s mental condition at the relevant time.

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The expression “lunatic” is found in older legal literature and traditional jurisprudence textbooks. Modern Indian law generally prefers expressions such as person with mental illness, person with disability or person of unsound mind. The Mental Healthcare Act, 2017 and the Rights of Persons with Disabilities Act, 2016 particularly reflect a modern rights-based approach.

The position of a drunken person is somewhat different. Intoxication is normally temporary. Its legal effect depends upon the degree of intoxication, whether it was voluntary or involuntary and the particular legal act involved.

What Is Meant by a Person of Unsound Mind?

A person of unsound mind is a person whose mental condition may impair the ability to understand the nature, consequences or legal effect of an act.

Unsoundness of mind is not necessarily permanent. A person may experience periods during which mental capacity is affected and periods during which the person is capable of understanding and making rational decisions.

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Indian law therefore does not ordinarily proceed on the assumption that every person suffering from mental illness is incapable of performing legal acts.

Mental Illness and Legal Incapacity Are Not the Same

Mental illness is primarily a medical concept, while legal incapacity is determined according to legal standards.

A person may suffer from a diagnosed mental illness and still possess sufficient capacity to understand a contract, make decisions relating to property or give valid instructions. Conversely, temporary delirium, intoxication or another condition may make a person incapable of understanding a particular transaction even though that person does not ordinarily suffer from mental illness.

This distinction becomes particularly important in contract law and criminal law.

What Is Meant by a Drunken Person?

A drunken person is a person whose mental or physical faculties have been affected by alcohol or another intoxicating substance.

Mere consumption of alcohol does not result in legal incapacity.

The law usually becomes concerned with drunkenness when intoxication reaches such a degree that the person cannot understand the nature of an act, cannot form a rational judgment or cannot appreciate the consequences of conduct.

The legal position also depends heavily upon whether the intoxication was:

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• Voluntary intoxication, where the intoxicating substance was knowingly consumed; or
• Involuntary intoxication, where the substance was administered without knowledge or against the person’s will.

This distinction is particularly significant in criminal law.

Legal Personality of a Person of Unsound Mind

A person of unsound mind remains a legal person.

Legal personality means recognition by law as a person capable of possessing legal rights and being subject to legal obligations. Mental illness does not ordinarily extinguish that personality.

A person with mental illness may therefore continue to have rights relating to:

• ownership and inheritance of property;
• equality before the law;
• dignity and personal liberty;
• access to courts and legal remedies;
• healthcare and medical treatment;
• privacy and confidentiality;
• financial affairs; and
• protection against discrimination and exploitation.

The more difficult issue concerns capacity to exercise particular rights independently, which may vary according to the circumstances.

Legal Capacity Under the Rights of Persons with Disabilities Act, 2016

The Rights of Persons with Disabilities Act, 2016 significantly changed the manner in which disability and legal capacity are approached in Indian law.

Right to Own and Inherit Property

Section 13 requires the appropriate government to ensure that persons with disabilities have the right, equally with others, to:

• own movable and immovable property;
• inherit property;
• control financial affairs; and
• obtain access to bank loans, mortgages and other forms of financial credit.

The legislation therefore rejects the idea that disability automatically prevents a person from owning or managing property.

Equal Legal Capacity

Section 13 also recognises the legal capacity of persons with disabilities on an equal basis with others and their right to equal recognition before the law.

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This provision reflects the wider shift towards preserving autonomy and independent decision-making rather than assuming complete incapacity merely because a disability exists.

Guardianship and Supported Decision-Making

Modern disability law does not treat guardianship simply as complete substitution of one person’s decision for another person’s decision.

Section 14 of the Rights of Persons with Disabilities Act provides for limited guardianship in situations where a person with disability has received adequate and appropriate support but remains unable to take legally binding decisions.

A limited guardian may assist in taking legally binding decisions in consultation with the person with disability.

The broader principle is that autonomy, dignity and privacy should be respected. A person providing support must not exercise undue influence over the person receiving assistance.

This represents a significant movement away from the older understanding that persons suffering from mental disabilities should ordinarily be placed completely under the control of guardians.

Rights Under the Mental Healthcare Act, 2017

The Mental Healthcare Act, 2017 adopts a rights-based framework for persons with mental illness.

The legislation does not treat mental illness merely as a basis for restricting legal capacity. It also creates extensive protections concerning healthcare, treatment and dignity. LawBhoomi has separately discussed the broader rights of persons with mental illness in India.

Right to Access Mental Healthcare

Persons with mental illness have a statutory right to access mental healthcare and treatment provided or funded by the government in accordance with the Act.

Healthcare should be affordable, accessible and of appropriate quality.

Right to Community Living

A person with mental illness has the right to live in, be part of and not be segregated from society merely because of mental illness.

Long-term institutionalisation cannot be treated as the automatic solution to mental illness.

Protection from Cruel and Degrading Treatment

Persons receiving mental healthcare are entitled to protection against cruel, inhuman and degrading treatment.

Their dignity must be respected during admission, treatment and rehabilitation.

Right to Equality and Non-Discrimination

Mental healthcare services must be provided without unlawful discrimination.

A person cannot be treated as having fewer basic human rights merely because of a mental health condition.

Right to Information

Persons receiving mental healthcare have rights relating to information about their condition and treatment.

The right to information is closely connected with meaningful participation in healthcare decisions.

Right to Confidentiality

Information relating to mental health and treatment enjoys statutory protection.

Confidentiality is particularly important because disclosure of mental health information may expose individuals to stigma and discrimination.

Right to Legal Aid and Complaint Mechanisms

The Act also provides mechanisms through which persons with mental illness may seek legal assistance and challenge violations of their statutory rights.

Capacity to Enter into a Contract

Contractual capacity is governed principally by Sections 11 and 12 of the Indian Contract Act, 1872. The rules relating to soundness of mind form an important part of the wider law on capacity and competency to contract.

Section 11 provides that a person must be of the age of majority, of sound mind and not otherwise disqualified by law in order to be competent to contract.

What Is the Test of Sound Mind for a Contract?

Section 12 provides the practical test.

A person is considered of sound mind for the purpose of making a contract if, at the time of making it, the person is capable of:

1. understanding the contract; and
2. forming a rational judgment regarding its effect upon personal interests.

The important words are “at the time” of making the contract.

Therefore, capacity is determined at the moment when the agreement is made rather than merely from the person’s general medical history.

Can a Person of Unsound Mind Enter into a Contract?

A person who is usually of unsound mind but occasionally becomes capable of understanding matters may contract during such periods of soundness.

This is commonly referred to as a lucid interval.

Section 12 recognises that a person who is ordinarily of unsound mind may contract during a period when that person is of sound mind.

Similarly, a person normally of sound mind may become temporarily incapable of contracting because of illness, delirium or severe intoxication.

Can a Drunken Person Enter into a Contract?

A drunken person is not automatically incompetent to contract.

The decisive question is whether intoxication has become so severe that the person cannot:

• understand the terms of the contract; or
• form a rational judgment regarding its effect on personal interests.

Section 12 of the Indian Contract Act specifically recognises this principle. A person who is so drunk that the terms cannot be understood or rationally evaluated cannot enter into a valid contract while that state continues.

Therefore, moderate intoxication does not automatically destroy contractual capacity. The degree of impairment is important.

Criminal Liability of a Person of Unsound Mind

The criminal law position is presently governed by the Bharatiya Nyaya Sanhita, 2023.

Section 22 of the Bharatiya Nyaya Sanhita

Section 22 provides a general exception relating to unsoundness of mind.

An act is not an offence where, at the time of doing it, the person was, because of unsoundness of mind, incapable of knowing:

• the nature of the act; or
• that the act was wrong; or
• that the act was contrary to law.

The provision broadly corresponds to the former Section 84 of the Indian Penal Code.

The crucial question is therefore not merely whether the accused had a mental illness. The issue is whether the unsoundness of mind produced the legally required incapacity at the time when the act was committed.

Medical Insanity and Legal Unsoundness of Mind

Criminal law distinguishes between medical diagnosis and legal incapacity.

The existence of a psychiatric condition does not by itself establish the statutory defence.

For Section 22 to apply, the mental condition must affect the person’s ability to understand the nature or wrongfulness of the act in the manner required by the provision.

This distinction is important because criminal liability ordinarily depends upon the legal requirements of the offence and the recognised statutory exceptions rather than solely upon a medical diagnosis.

Criminal Liability of a Drunken Person

The law relating to intoxication is contained mainly in Sections 23 and 24 of the Bharatiya Nyaya Sanhita, 2023.

What Happens in Cases of Involuntary Intoxication?

Section 23 protects a person where an intoxicating substance was administered:

• without the person’s knowledge; or
• against the person’s will,

and the resulting intoxication made the person incapable of knowing the nature of the act or that it was wrong or contrary to law.

Thus, involuntary intoxication may provide a defence when the statutory requirements are satisfied.

Is Voluntary Drunkenness a Defence?

Voluntary drunkenness generally does not provide a broad defence against criminal liability.

Section 24 deals with offences requiring particular knowledge or intent. A voluntarily intoxicated person may generally be treated as having the knowledge that would have existed if that person had not been intoxicated.

The law therefore prevents a person from ordinarily escaping criminal responsibility merely by arguing that alcohol or another intoxicating substance was voluntarily consumed before committing the act.

Can a Person of Unsound Mind Make a Will?

Testamentary capacity is governed principally by Section 59 of the Indian Succession Act, 1925.

A person ordinarily of unsound mind may make a valid will during a lucid interval if capable of understanding the nature and effect of the testamentary act.

This again demonstrates that Indian law generally examines actual capacity at the relevant time instead of imposing an absolute prohibition based merely on mental illness.

Can a Drunken Person Make a Will?

A person cannot validly make a will while intoxication has affected mental capacity to such an extent that the person does not understand what is being done.

Therefore, the mere fact that alcohol has been consumed is not necessarily decisive. The relevant consideration is whether the person possessed sufficient testamentary understanding when the will was executed.

Voting Rights of Persons of Unsound Mind

Mental illness by itself does not automatically remove voting rights.

Section 16 of the Representation of the People Act, 1950 provides a disqualification from registration in an electoral roll where a person is of unsound mind and has been so declared by a competent court.

Therefore, a medical condition or psychiatric diagnosis alone does not automatically result in electoral disqualification.

Marriage and Unsoundness of Mind

Mental capacity may also have consequences under matrimonial law.

For example, the Hindu Marriage Act, 1955 contains conditions concerning mental capacity and mental disorder in relation to marriage. Mental disorder may also become relevant to matrimonial remedies in circumstances specifically recognised by the Act.

However, mental illness should not be treated as automatically making every marriage invalid or preventing every person with mental illness from marrying. The statutory requirements and factual circumstances must be examined in each case.

Difference Between a Person of Unsound Mind and a Drunken Person

Although both conditions may affect legal capacity, they are legally distinct.

Why Legal Personality and Legal Capacity Must Be Distinguished

The most important jurisprudential principle in this area is the distinction between legal personality and legal capacity.

Legal personality determines whether an individual is recognised by law as a holder of rights and duties.

Legal capacity concerns the ability to perform particular legally significant acts.

A person suffering from mental illness may therefore remain the owner of property and holder of legal rights while temporarily lacking capacity to enter into a particular contract.

Similarly, a drunken person remains a legal person even where temporary intoxication makes a particular transaction legally ineffective.

Modern Indian law increasingly protects autonomy rather than assuming blanket incapacity. The Rights of Persons with Disabilities Act particularly reinforces equal recognition before law, legal capacity, property rights and supported decision-making.

Conclusion

The legal status and rights of persons of unsound mind and drunken persons demonstrate that Indian law does not generally equate impaired mental capacity with loss of legal personality.

A person with mental illness continues to possess fundamental legal rights, including rights relating to dignity, healthcare, property, inheritance, access to justice and equal recognition before law. Modern legislation such as the Mental Healthcare Act, 2017 and the Rights of Persons with Disabilities Act, 2016 strengthens this rights-based approach.

The central legal principle is therefore that mental illness or drunkenness does not by itself erase legal personality. The law instead examines whether the person’s capacity was sufficiently impaired in relation to the particular legal act at the relevant time.

Note: This article was originally written by Gitika Jain (3rd year BBA LLB, Amity University, Kolkata) and published on 04 March 2020. It was subsequently updated by the LawBhoomi team on 28 Aug 2026.