1. Legal Position of Medical Evidence in Annulment

In annulment cases, medical evidence is:

(a) Strong but not conclusive alone

Courts do not treat medical reports as automatic proof. They must be corroborated with:

• Oral testimony
• Conduct of parties
• Circumstantial evidence

(b) Subject to burden of proof

The petitioner must prove grounds under:

• Section 12, Hindu Marriage Act, 1955 (voidable marriages)
• Section 5 (conditions of valid marriage)

(c) Requires expert testimony

Courts insist on:

• Examination of doctors
• Clinical records
• Medical board reports

2. Key Grounds Where Medical Evidence is Crucial

(i) Impotency / Non-Consummation (Section 12(1)(a))

Medical evidence is used to prove whether either spouse:

• Was incapable of sexual intercourse at the time of marriage
• Continues to be incapable

Case Law 1: Shamla Devi v. Surjit Singh (Himachal Pradesh High Court)

• Wife sought annulment alleging husband’s impotence.
• Court held: burden of proof lies on petitioner
• Husband medically examined and found potent.
• Wife failed to prove non-consummation.
• Held: Annulment denied due to lack of reliable medical proof. 

(ii) Mental Disorder / Psychological Incapacity (Section 12(1)(b))

Medical evidence must show:

• Mental disorder existed at time of marriage
• It is severe enough to affect marital life

Case Law 2: R. Lakshmi Narayan v. Santhi (Supreme Court of India, 2001)

• Husband alleged wife suffered mental disorder.
• Court held:
  • Mental illness must be of such degree that marital life is impossible
  • Mere diagnosis is not enough
• Held: Annulment refused due to insufficient proof of severity. 

Case Law 3: Smt. Alka Sharma v. Abhinesh Chandra Sharma (Madhya Pradesh High Court)

• Husband sought annulment claiming wife was mentally ill.
• Court emphasized:
  • Expert psychiatric evidence is necessary
  • Medical proof must be consistent and corroborated
• Held: Petition dismissed for lack of convincing medical evidence.

(iii) Concealment of Medical Conditions (Fraud)

If one party conceals serious medical conditions, annulment may be granted.

Case Law 4: Ananth Kumar v. Smt. Radha (Karnataka High Court)

• Wife allegedly concealed epilepsy/mental illness.
• Medical records showed pre-marriage treatment history.
• Court held concealment = fraud under Section 12(1)(c)
• Held: Marriage annulled due to suppression of medical facts.

(iv) Infertility and Reproductive Capacity

Medical evidence is used to establish:

• Sterility or infertility at time of marriage
• Whether condition was known or concealed

Case Law 5: Nirmala Devi v. State of Himachal Pradesh (HP High Court)

• Husband alleged wife concealed infertility.
• Court ruled:
  • Infertility alone is not fraud unless concealed knowingly
  • Medical proof must show pre-existing condition
• Held: Annulment denied due to lack of proof of concealment.

(v) Sexual Dysfunction / Erectile Dysfunction

Courts require strict medical testing:

• Urological examination
• Hormonal and physical assessment

Case Law 6: Suraj Prakash Sehgal v. Amrita Darnal (Delhi High Court)

• Husband alleged wife was impotent leading to non-consummation.
• Court observed:
  • No medical examination of wife was produced
  • Adverse inference cannot be drawn automatically
• Held: Petition dismissed for lack of medical evidence. 

(vi) Psychiatric Evaluation Orders (Court’s caution)

Courts are cautious in ordering medical tests.

Case Law 7: Bombay High Court (Aurangabad Bench, 2025)

• Trial court ordered psychiatric examination in divorce dispute.
• High Court set aside order:
  • Must not be mechanical
  • Requires prima facie medical justification
• Held: Medical testing affecting dignity cannot be ordered casually. 

3. Principles Emerging from Case Law

(A) Medical evidence must be “clear, cogent, and expert-backed”

Courts reject:

• Self-serving allegations
• Unverified prescriptions
• Non-examined doctor statements

(B) Burden of proof is heavy on petitioner

Especially in:

• Impotency claims
• Mental illness claims
• Fraud based on medical concealment

(C) Presumption of validity of marriage

Under Section 112 of Evidence Act:

• Marriage is presumed valid
• Children born in marriage are legitimate unless proven otherwise

(D) Courts protect dignity and privacy

Especially in:

• DNA tests
• Psychiatric evaluation
• Sexual incapacity allegations

(E) Medical evidence must be contemporaneous

Post-litigation medical reports alone are weak unless:

• Supported by earlier records
• Corroborated by conduct

4. Summary

Medical evidence in matrimonial annulment cases is:

• Essential but not decisive alone
• Must be scientifically credible and legally relevant
• Evaluated alongside conduct, testimony, and circumstances
• Subject to strict scrutiny due to sensitive nature of marital privacy

Courts repeatedly stress that annulment cannot be granted merely on allegations; it requires strong, medically verified proof satisfying statutory grounds under Section 12 of the Hindu Marriage Act.