Here are the complete, systematic Chapter 1 notes directly from KS Narayan Reddy - The Essentials of Forensic Medicine and Toxicology, 36th Edition (2026):
📘 CHAPTER 1: MEDICAL JURISPRUDENCE & LEGAL CONCEPTS
Reference: KS Narayan Reddy - Essentials of Forensic Medicine & Toxicology, 36th Ed.
1. SUMMONS / SUBPOENA
(Sections 63-71, BNSS; formerly S. 61-69 Cr.P.C.)
Definition: "Subpoena" (sub = under; poena = penalty) is a document compelling the attendance of a witness in a court of law under penalty, on a particular day, time and place, for the purpose of giving evidence.
- May also require production of books/documents - called "subpoena duces tectum" (Sections 94 & 195 BNSS; S.165 BSA)
- Issued in writing, in duplicate, signed by presiding officer, bearing court seal (Section 63, BNSS)
- Contains crime number and name of accused
- Served by police officer / court officer / public servant
- Can be served by registered post or fixed on a conspicuous part of the house
Implications of Ignoring a Court Summons:
| Court Type | Punishment |
|---|
| Civil case | Liable to pay damages |
| Criminal case | Fine or imprisonment (Section 208, BNS); bailable/non-bailable warrant may be issued (Sections 206-208, BNS; Section 90, BNSS) |
| Intentional non-attendance | Imprisonment up to 1 month or fine or both (Section 208, BNS) |
Priority Rule:
- Criminal Courts > Civil Courts
- Higher Courts > Lower Courts
- If summoned by two courts of same status: attend whichever served summons first
2. CONDUCT MONEY
- Fee offered/paid to a witness in civil cases at the time of serving summons, to meet expenses for attending court
- If not paid or felt insufficient: doctor can bring to notice of Judge before giving evidence; Judge decides amount
- In criminal cases: No fee at time of summons; witness must attend due to State interest (otherwise = contempt of court); however, conveyance charges + daily allowance can be claimed as per government rules
- Contempt = willful disregard or disobedience of court's order
3. INQUEST
(Section 194-196, BNSS; formerly S. 174-176 Cr.P.C.)
Definition: An inquest is an inquiry/investigation into the cause of death.
When conducted: Suicide, murder, animal/machinery killing, accidents, torture/ill-treatment deaths, occupational diseases, suspected medical negligence, suspicious/unnatural deaths, deaths due to anesthesia/operation, unidentified/skeletonized bodies.
Two types in India:
A. Police Inquest (Section 194, BNSS)
- Conducted by officer-in-charge of police station (not below rank of head constable)
- Called Investigating Officer (I.O.)
- Done in presence of two or more respectable persons (panchas)
- Prepares a report (Panchanama): apparent cause of death, wounds, fractures, marks of injury, weapon description
- Signed by I.O. and panchas
- Body sent with dead body challan + copy of inquest for PM examination to nearest authorized government doctor (without removing clothes)
- Private institutions can do ML examination of living but autopsies only with State Government permission
B. Magistrate's Inquest (Section 196, BNSS)
Conducted by District Magistrate / Sub-divisional Magistrate / Tahsildar in cases of:
- Dowry death
- Death in police custody / judicial custody
- Death in prison
- Death in a psychiatric institution
- Death of a woman within 7 years of marriage
- Cases specifically ordered by State Government
4. DOCUMENTARY EVIDENCE
Evidence includes: (1) All statements made before court by witnesses (2) All documents produced for court inspection (Section 2, BNS)
- Medical expert evidence = opinion only (corroborative, not positive)
- Eyewitness evidence = positive
Types:
| Type | Definition |
|---|
| Primary Evidence | Document itself produced for inspection (Section 208, BNS) |
| Secondary Evidence | Certified copies, counterparts, oral accounts of contents |
Medical Certificates (Documentary Evidence):
- Accepted in court only when issued by a qualified registered medical practitioner
- Must specify exact nature of illness
- Examine and issue for not more than 15 days; re-examine and re-issue
- Must address a specific person (employer, headmaster, etc.)
- Retain duplicate for 2 years
- Death certificate: legally bound to give without fee if patient dies under doctor's care (Registration of Births and Deaths Act, 1970)
- Do not issue death certificate without inspecting the body
- False certificate = punishable under Section 234, BNS (formerly S. 197, I.P.C.)
5. CHIEF EXAMINATION & CROSS EXAMINATION
| Stage | Who Conducts | Purpose |
|---|
| Examination in Chief | Party who called the witness | To elicit favourable evidence; leading questions NOT allowed |
| Cross Examination | Opposing party | To test accuracy, credibility; leading questions ALLOWED |
| Re-examination | Original party again | To clarify matters raised in cross examination; new matters only with court permission |
| Court Questions | Judge directly | To clarify any point at any time |
Types of Witnesses:
- Ordinary witness - gives factual testimony based on personal observation
- Expert witness - gives opinion on matters requiring special knowledge (doctor = expert witness)
- Hostile witness - witness who turns against the party that called them
6. PRIVILEGED COMMUNICATION
Definition: A statement made bona fide upon any subject matter by a doctor to the concerned authority, due to his duty to protect the interests of the community or the State.
Conditions:
- Must be made to a person having interest in it
- If made to more than one person or an uninvolved party - privilege fails
- Doctor should first persuade patient to consent before notifying authority
Examples (Exceptions to Professional Secrecy):
| Situation | Action |
|---|
| Infectious disease (cook/waiter/teacher with TB) | Persuade patient to leave job; if refused - inform employer |
| Engine driver/pilot with epilepsy, hypertension, alcoholism | Persuade to change employment; if refused - inform employer |
| Notifiable diseases | Statutory duty to notify Public Health authorities |
| Venereal disease patient about to marry | Advise not to marry till cured; if refused - disclose to prospective partner/parents |
| Syphilitic person in swimming pool (if refused to leave) | Inform pool authorities |
7. INFAMOUS CONDUCT
Definition: "Serious professional misconduct" - any conduct of a registered medical practitioner which might reasonably be regarded as disgraceful or dishonorable. It involves an abuse of professional position.
Examples of acts constituting Infamous Conduct (Warning Notice - NMC):
- Improper conduct with a patient
- Conviction by court for offences involving moral turpitude
- Issuing false/misleading/improper certificates (insurance, passport, court attendance)
- Contravening Drugs and Cosmetics Act (prescribing steroids/psychotropics without indication)
- Issuing efficiency certificates to unqualified persons
- Running an open shop for sale of medicines
- Violating provisions related to abortion, drugs, clinical trials
- Consuming alcohol while on duty (NMC ethics guidelines)
Differences: Professional Negligence vs. Infamous Conduct
| Trait | Professional Negligence | Infamous Conduct |
|---|
| Offence | Absence of proper care/skill or willful negligence | Violation of Code of Medical Ethics |
| Duty of Care | Must be present | Need not be present |
| Damage to person | Must be present | Need not be present |
| Trial by | Courts (civil or criminal) | State Medical Council |
| Punishment | Fine or Imprisonment | Erasure of name from register or warning |
| Appeal | To Higher Court | To State and Central Governments |
8. VALID CONSENT
Definition: Voluntary agreement/compliance/permission given after understanding what it is given for and the risks involved.
Kinds of Consent:
- Implied Consent - Patient's behavior implies consent (e.g., holding out arm for injection, attending hospital)
- Informed Express Consent - Specifically stated; may be (a) verbal or (b) written
Informed Consent requires patient understanding of:
- Nature of his condition
- Nature of proposed treatment/procedure
- Expectations and likelihood of success
- Alternative courses available
- Risks and benefits of proposed and alternative procedures
- Potential risks of NOT receiving treatment
- Particular known material risks
Rules of Consent:
- Consent necessary for every medical examination
- Oral consent in presence of a disinterested third party (e.g., nurse)
- Written consent for operations, blood transfusion, invasive procedures
- Should be free, voluntary, clear, intelligent, informed, direct and personal - no fraud, misrepresentation, undue influence, or compulsion
- In rape cases: victim must NOT be examined without written consent
- In ML cases of pregnancy/abortion: woman must NOT be examined without consent
Exceptions to Informed Consent:
- Emergency
- Therapeutic privilege (emotionally disturbed/frank psychosis patient)
- Patient waives right and delegates to doctor or close relative
Therapeutic Privilege: In frank psychosis or extreme psychoneurosis, doctor may use discretion regarding disclosure; must carefully note decision in patient's record.
Valid Consent - Age Rules:
| Age / Condition | Who Consents |
|---|
| Minor (< 18 yrs) | Parent or guardian |
| Unconscious adult | Nearest relative; if not available - doctor proceeds |
| Mentally ill (unable to understand) | Guardian / court |
| Prisoner | Himself - cannot be forced |
9. IN LOCO PARENTIS
Literal meaning: "In the place of a parent" (Latin)
Meaning in law: A person or institution acting in the place of a parent. It confers the rights and responsibilities of a parent upon a non-parent (e.g., a school authority, guardian, hospital for a minor).
Benefits:
- Authority to consent to medical treatment on behalf of a minor
- Legal protection for decisions made in the best interests of the child
- Applicable when parents are unavailable/deceased/incapacitated
- Applicable to schools, foster parents, institutions, and appointed guardians
10. DOCTRINE OF RES IPSA LOQUITUR
Meaning: "The thing/fact speaks for itself" - a rule of evidence in the law of torts.
Key principle: Ordinarily, professional negligence must be proved by expert medical evidence. Under res ipsa loquitur, the patient need not prove negligence - he merely states what the act of negligence was.
Three conditions to be satisfied:
- In the absence of negligence, the injury would NOT have occurred ordinarily
- The doctor had exclusive control over the injury-producing instrument or treatment
- The patient was NOT guilty of contributory negligence
Examples:
- Prescribing an overdose of medicine producing ill-effects
- Giving poisonous medicine carelessly
- Failure to give anti-tetanic serum causing tetanus
- Burns from hot water bottles or X-ray therapy
- Breaking of needles during procedure
- Failure to remove swabs during operation causing death
- Blood transfusion misadventure
- Loss of use of hand due to prolonged splinting
Application:
- Applied to both civil AND criminal negligence
- Does NOT apply where common knowledge is insufficient
- Cannot be applied against several defendants when the responsible one cannot be identified
- Mohn vs. Osborne (landmark case): Surgeon held negligent under this doctrine when a swab was found under the liver two months after surgery (despite swab count being reported correct)
11. VICARIOUS LIABILITY (BORROWED SERVANT DOCTRINE)
Principle: "Respondeat superior" - let the master answer. An employer is responsible not only for his own negligence, but also for the negligence of his employees, if acts occur in the course of employment.
Conditions:
- Employer-employee relationship must exist
- Employee's conduct must occur within the scope of employment
- While on the job
Borrowed Servant Doctrine:
- An employee may serve more than one employer
- Example: A nurse employed by a hospital to assist in operations becomes the "borrowed servant" of the operating surgeon during the operation, but remains the servant of the hospital for all other purposes
- The lending employer temporarily surrenders control; the borrowing employer temporarily takes over control
Other Applications:
- Doctor liable for negligence of his assistant (both can be sued)
- Partners liable for each other's negligence
- Hospital liable for negligence of resident physicians/interns (considered employees)
- Surgeon is responsible if swab/instrument is left in patient after operation
- A surgeon is ordinarily NOT liable for negligence of the anesthetist (and vice versa)
- Physicians NOT responsible for negligent acts of nurses/hospital personnel unless acts are under their direct supervision and control
12. TESTAMENTARY CAPACITY
Definition: The mental ability of a person to make a valid will. (Testament = will; BNS 2/34; formerly S.31 I.P.C.)
Requirements for a valid will:
- Written, properly signed and witnessed document
- Testator must be a major (adult)
- Must be of sound disposing mind (compos mentis) at the time of making the will
- No force, undue influence, or dishonest representation of facts
Sound disposing mind = mind capable of recollecting, judging and feeling the relations and obligations of family and blood relations.
Medical assessment of testamentary capacity:
- Ask about relatives, their number, degree of social contact
- General questions about time, place, awareness
- Ask about nature, extent, and value of properties and manner of distribution desired
- Test powers of concentration (simple arithmetic)
- Ask all other persons to leave the room - check for undue pressure
Doctor must exclude: Disease, infirmity, pain, strain, drug/alcohol influence, or insane delusion.
Effect of drugs/withdrawal: May cause changes in consciousness, reasoning ability, perception of reality and memory - all affecting testamentary capacity.
Holograph will: One written by testator entirely in his own handwriting.
13. IPC SECTION 84 (BNS Section 22)
Substance: Act of a person of unsound mind - nothing is an offence which is done by a person who, at the time of doing it, by reason of unsoundness of mind, is incapable of knowing the nature of the act, or that he is doing wrong, or contrary to law.
This is the legal basis of the McNaughten's Rules (Right-Wrong Test)
14. RIGHT-WRONG TEST (McNaughten's Rules)
A test for criminal responsibility in persons with mental illness. The accused is not criminally responsible if at the time of the act:
- He did not know the nature and quality of the act he was doing, OR
- If he did know it, he did not know that what he was doing was wrong
15. IPC SECTION 320 (BNS Section 114) - Grievous Hurt
(Detailed notes in Chapter 4 - Mechanical Injuries)
The following kinds of hurt are designated as "grievous":
- Emasculation
- Permanent privation of sight of either eye
- Permanent privation of hearing of either ear
- Privation of any member or joint
- Destruction or permanent impairing of powers of any member or joint
- Permanent disfiguration of the head or face
- Fracture or dislocation of a bone or tooth
- Any hurt which endangers life or causes the sufferer to be in severe bodily pain or unable to follow his ordinary pursuits for a period of 20 days
Source: KS Narayan Reddy - The Essentials of Forensic Medicine and Toxicology, 36th Edition (2026), Blocks 1 & 5
Key Memory Aids:
- Summons/Subpoena - "sub = under, poena = penalty" - penalty for ignoring = fine/imprisonment (criminal), damages (civil)
- Res ipsa loquitur - "the thing speaks for itself" - 3 conditions: no negligence = no injury + exclusive control + no contributory negligence
- Respondeat superior - "let the master answer" = basis of vicarious liability
- Testamentary capacity - major + sound disposing mind + no undue influence
- Therapeutic privilege = exception to full disclosure in frank psychosis
- Conduct money - civil cases only; criminal = conveyance + daily allowance