Consent in Minors
A high-yield Step 2 CK ethics lesson on consent in minors: the default of parental permission plus child assent, and the exam-critical exceptions — emergencies, emancipated and mature minors, and confidential care for STIs, contraception, pregnancy, and substance use — with next-best-step logic for maintaining confidentiality and overriding parental refusal of life-saving care.
The Framework
In the US a minor is anyone under 18. The default rule: a parent or legal guardian gives informed permission (consent) while the child gives assent (developmentally appropriate agreement). Boards rarely test the default — they test the exceptions, which cluster into four groups:
- Emergency care — treat immediately; consent is implied.
- Emancipated minors — legally treated as adults for medical decisions.
- Mature minor doctrine — a capable adolescent may consent to certain low-risk care (state-dependent).
- Confidential care categories — STIs, contraception, pregnancy care, substance use, and (often) mental health, where the minor consents alone.
The recurring theme: protect adolescent confidentiality, but override parents and act whenever life or limb is threatened. When the stem says "the patient is 15 and doesn't want her parents told," the answer is usually to provide the sensitive care and keep it confidential — not to call the parents.
- Default: parent/guardian gives informed permission; the minor gives assent.
- Emergency: provide life- or limb-saving care immediately — never delay for consent.
- Emancipated minor consents like an adult: married, active-duty military, financially self-supporting/living independently, already a parent, or court-declared. (Pregnancy alone usually does NOT emancipate — though a pregnant minor may consent to her own prenatal care.)
- Confidential care a minor may consent to alone: STI testing/treatment, contraception, prenatal/pregnancy care, substance-use treatment, and (state-dependent) mental health care.
- Maintain confidentiality — the classic leak is an insurance EOB / billing statement mailed home.
- Parents may NOT refuse life-saving treatment for a child (e.g., transfusion) → treat / obtain emergency court order.
- Abortion is the exception: many states require parental consent or notification, with judicial bypass available.
- Break confidentiality only for danger to self/others (active suicidality/homicidality) or suspected abuse (mandatory report).
Who Consents — Decision Grid
| Situation | Who consents | Exam next step |
|---|---|---|
| Routine / non-urgent care | Parent or legal guardian | Get parental permission + child assent |
| Emergency, guardian unavailable | Implied consent | Treat immediately; do not delay |
| Emancipated minor | The minor (adult rights) | Treat on the minor's own consent |
| STI, contraception, pregnancy, substance use | The minor | Treat; maintain confidentiality |
| Parent refuses life-saving care | Refusal is overridden | Treat / emergency court order |
| Abortion | State-dependent | Parental involvement or judicial bypass |
Stem: A 16-year-old girl requests testing after unprotected intercourse. Exam shows mucopurulent cervicitis. She asks that her parents not be informed.
Interpretation: STI evaluation and treatment fall within confidential care a minor may consent to independently — parental permission is not required and confidentiality should be honored.
Next best step: Test and treat empirically per CDC — ceftriaxone 500 mg IM for gonorrhea plus doxycycline 100 mg PO BID ×7 days for chlamydia (use azithromycin 1 g PO instead if she is pregnant). Also do a pregnancy test and offer HIV/syphilis screening. Maintain confidentiality, counsel on contraception/condoms, and ensure partner treatment (expedited partner therapy where legally permitted).
Trap answers: "Obtain parental consent first," "notify her parents," or "defer treatment until parents are reached" — all wrong. The only trigger to breach confidentiality here is evidence of abuse/assault, which mandates reporting.
Stem: A 7-year-old boy is brought in after a motor-vehicle crash with massive hemorrhage and hemoglobin 4 g/dL. He needs an emergent transfusion. His parents, Jehovah's Witnesses, refuse blood products.
Interpretation: A competent adult may refuse blood for themselves, but parents cannot refuse life-saving treatment on behalf of a child ("parents may not martyr their children," Prince v. Massachusetts).
Next best step: Transfuse to save the child's life. If time permits, obtain an emergency court order, but do not withhold care while awaiting it in a true emergency.
Contrast: If the same care were elective/non-emergent, you would work with the family, seek alternatives (e.g., bloodless/cell-salvage techniques), and pursue a court order before proceeding. The life-threatening emergency is what removes the parents' veto.
Emancipated minor — the "M" list ("grew up fast"):
- Married
- Military (active duty)
- Money — financially self-supporting / living independently
- Mom or dad — already a parent
- (+ court-declared emancipation)
Confidential care a minor consents to alone — what a teen would hide from parents:
- Sex → STIs + contraception
- Pregnancy → prenatal care
- Substances → drug/alcohol treatment
- Sanity → mental health (state-dependent)
Confidentiality-breakers that always win over secrecy: danger to self/others or abuse/neglect (mandatory report).
Pitfalls & Nuance
Assent vs. consent: children give assent; only the guardian gives legally binding permission/consent. Respect assent when possible, but it is not required for necessary care.
Confidentiality is not absolute. You must breach it for active suicidality/homicidality (duty to protect) or suspected child abuse (mandatory reporting) — the classic override answers.
Abortion is the trap. Unlike other reproductive services, many states require parental consent or notification, with a judicial bypass option — so "the minor decides alone" is often wrong for abortion specifically.
Billing leaks. Even with correctly confidential care, an insurance explanation-of-benefits sent home can reveal it — anticipate this and use confidential coding/self-pay when asked.
Routine care still needs a parent. Immunizations and non-urgent procedures for a non-emancipated minor require parental permission — don't over-apply the confidential-care exceptions.
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