You went in for one thing and they did another. Or they did the thing, but never told you about the risk that then came true, or the alternative you would have chosen instead. Or you woke up to learn a different surgeon operated, or that a procedure you never discussed was added while you were under. Patients are often told, in effect, that signing the clipboard at check-in covered all of it. It did not. Consent in medicine is specific, and exceeding it has names in the law.
This guide explains the two distinct legal wrongs hiding inside "they did something I didn't agree to," because they are not the same claim and they are not proven the same way. Get the distinction right and you will know what actually happened to you, what evidence to pull, and which door to walk through.
How to use this guide. First understand whether your situation is a disclosure problem (they didn't tell you enough) or a scope problem (they did something you never agreed to at all). Those are different torts. Then pull the consent forms and the operative note, because the gap between what you signed and what they did is the whole case. Then choose your channel.
A. The law of consent
1. What valid informed consent actually requires
Informed consent is not a signature. It is a conversation in which the provider discloses, in terms you can understand, the nature of the proposed procedure, its material risks, the reasonable alternatives (including doing nothing), and the risks of refusing, so that you can make a genuine decision. A form you signed in the waiting room while distracted, frightened, or already sedated, with no real discussion, may not be valid consent at all. The point of the doctrine is your autonomy: it is your body and your decision, and you cannot decide without the facts.
2. Two different wrongs: disclosure versus scope
This is the distinction everything turns on. Lack of informed consent is usually a negligence claim: you consented to the procedure, but the provider failed to disclose a material risk or alternative, and had you been properly informed, a reasonable person would have made a different choice, and the undisclosed risk then caused you harm. Medical battery is a different animal, an intentional tort: it is an unconsented touching, performing a procedure you never agreed to at all, or going substantially beyond the scope of what you authorized.
Why the distinction matters. A lack-of-informed-consent (negligence) claim generally requires expert testimony about what should have been disclosed, plus proof that the undisclosed risk caused harm and that you would have declined had you known. Medical battery often does not require expert testimony on the standard of care at all, because the wrong is the unauthorized touching itself, not whether it was done skillfully. Operating on the wrong body part, performing an operation you never consented to, or substituting a different surgeon than the one you agreed to ("ghost surgery") are battery scenarios. Which theory fits changes what you must prove, so it is worth getting right early.
3. The reasonable-patient line
States measure disclosure one of two ways. About half ask what a reasonable patient would want to know (the materiality standard); the rest ask what a reasonable physician would customarily disclose. The trend has been toward the patient-centered standard, which is more protective of you. Your state's rule affects how a disclosure claim is proven, and it is one of the first things a lawyer will pin down.
4. The exceptions, and their limits
Consent is not always required. In a true emergency, when you cannot consent and delay would risk life or limb, consent is implied. A narrow "therapeutic privilege" lets a doctor withhold information in rare cases where disclosure itself would seriously harm the patient. And surgeons sometimes encounter the unexpected mid-procedure. But these are exceptions with edges. "We found something else and decided to address it while we were in there," for a non-emergency procedure you never discussed, is frequently outside the exception and squarely inside the definition of exceeding consent. Do not let an exception be used to paper over a scope violation.
B. Identify what happened
5. The common scenarios
Watch for: a procedure performed that you never authorized; a procedure that went beyond what you agreed to (consent for a diagnostic look, an organ removed); the wrong site or wrong side; a different provider than the one you consented to; sterilization or a device implanted without specific consent; a known material risk never disclosed that then occurred; or an alternative treatment hidden from you that you would have chosen. Write down, in your own words, exactly what you were told you were agreeing to, and exactly what was done.
C. Get the proof
6. Pull the consent forms and the operative note
Request your complete records, and specifically the signed consent forms and the operative or procedure note (see our guide on getting your records). The case lives in the gap between the two: what the form says you authorized versus what the note says was done. Also pull the anesthesia record and any pre-op notes, which often reveal what was actually discussed and when (a form "signed" after sedation is a problem).
7. Document the conversation, or the absence of one
Memory fades and charts get tidied, so write your account now: who explained what, when, in what words, what you asked, and what you were not told. If anyone was with you, ask them to write down what they remember independently. A contemporaneous account of the consent conversation, or the lack of one, is evidence.
D. Use the channels
8. File a board complaint
Performing a procedure without consent or beyond its scope is a serious professional violation, and the state medical board can act on it independent of any lawsuit (see how to file a board complaint). Lay out, with the consent form and the operative note attached, the difference between what you authorized and what was done.
9. Consult an attorney who handles consent and battery cases
Because the disclosure-versus-battery distinction changes what you must prove and what damages are available, this is worth a conversation with a lawyer who handles both. Most offer free consultations and work on contingency. Bring the consent forms, the operative note, and your written account. Ask which theory fits, whether expert testimony will be needed, and what your state's deadline is, because the statute of limitations is short and can differ between a negligence theory and an intentional-tort theory.
E. Symbolic closure
10. Send them their oath, printed on toilet paper
Of all the betrayals in medicine, having something done to your body that you never agreed to is among the most violating, because the whole premise of the relationship is that it is your decision. This is the option this site exists to provide. You can mail the physician the Hippocratic Oath, printed on a triple-ply novelty toilet paper roll, through USPS, with your return address visible. It is satirical commentary protected by the First Amendment, and it is not a substitute for the board complaint or the lawyer.
Ten percent of every sale of the Hippocratic Oath roll goes to a patient-advocacy organization. The roll is available at shop.thelastwipe.com.
What Not To Do
- Don't assume the clipboard you signed covered everything. Consent is specific to the procedure you discussed.
- Don't conflate the two claims. "They didn't tell me a risk" is a disclosure (negligence) case; "they did something I never agreed to" is battery. They prove differently.
- Don't lose the documents. The signed consent form and the operative note are the heart of it; get certified copies.
- Don't let "we handled it while we were in there" go unexamined for a non-emergency you never authorized. That may be exceeding consent, not an exception to it.
- Don't make threats or dox anyone. Send a single roll with your return address through USPS, and stop. That's the legal line.
- Don't wait. The statute of limitations is short and may differ by theory; get a consult promptly.
Pull the form, pull the note, and measure the distance between them. That distance is the difference between care you chose and something that was done to you.