Medical-Forensic Expert Witness
Non-fatal strangulation expert witness
Independent review and testimony in non-fatal strangulation cases, for prosecution and defense. In published case series, most non-fatal strangulation leaves little or no external injury. I explain what that does and does not mean, grounded in the literature and the specific facts.
What I review in a strangulation case
Non-fatal strangulation is often under-documented, and the significance of its findings is frequently disputed. The science is specific, and so are its limits. I read the records, the examination documentation, the photographs, and the relevant literature, and I apply that science to the facts in front of us, not to the outcome either side is hoping for.
- Medical, EMS, and emergency-department records
- SANE/SAFE and forensic examination documentation and photographs
- Depositions, interviews, and prior statements
- The peer-reviewed literature on strangulation findings and their limits
External findings and their limits
The single most important fact in these cases is also the most misunderstood: the majority of non-fatal strangulation produces little or no visible external injury. That cuts in both directions, and a careful expert says so plainly.
Key limits in strangulation cases
- Absence is not exculpatory. "No marks" does not prove strangulation did not occur.
- Presence is not a force gauge. Visible findings do not measure how much pressure was applied.
- Many signs are non-specific. Petechiae, voice changes, and soft-tissue complaints have differentials that must be worked, not assumed.
- It can be lethal. Delayed serious injury or death is reported in some cases, even when external findings are minimal or absent.
- "Consistent with" is not "caused by." The two are different claims with different burdens, and the slide between them is where testimony fails.
A careful opinion states each of those limits plainly, whichever side it favors.
Training specific to strangulation
My strangulation training runs from 2022 through 2026 at the Training Institute on Strangulation Prevention: Investigating Strangulation (2022), Advanced Course — Strangulation Prevention (2024), Pediatric Strangulation (2024), The Truth and Consequences of Sexual Choking/Strangulation (2025), and The Legal Consequences of Strangulation During Sex (2026). I have performed and supervised medical-forensic examinations, including strangulation assessments, since 2019. A summary CV is available on this site.
For prosecution and defense
I accept engagements from both the prosecution and the defense, and I apply the same methodology and the same fee structure regardless of retaining party. Details of how an engagement proceeds are available for the prosecution and for the defense.
Common questions
Strangulation expert witness FAQ
Do you testify for the prosecution or the defense in strangulation cases?
Both. I accept engagements from prosecution and defense; the methodology, the standards, and the fee structure are identical in either case.
Does the absence of marks on the neck mean no strangulation occurred?
No. In published case series, most non-fatal strangulation shows little or no external injury. Absence of visible findings does not prove that strangulation did not happen. Equally, the presence of findings is not a reliable measure of how much force was used.
What materials do you review in a strangulation case?
Medical and emergency records, examination and SANE/SAFE documentation, photographs, EMS and emergency-department records, depositions and interviews, and the relevant peer-reviewed literature, applied to the specific facts of the case.
Where can you provide testimony?
Testimony is available CONUS and OCONUS, for prosecution or defense, subject to a conflict and fit check.
Other areas of expertise
Sexual assault & SAFE exams
Interpreting medical-forensic examination findings and their limits.
Intimate partner violence
Patterns of injury: what a finding suggests versus what it proves.
Child abuse
Literature-grounded pediatric review: the differential, the mimics, the limits.
All services & process
Records review, reports, deposition, and testimony, and how an engagement runs.
Further reading: Delayed and Hidden Injury After Non-Fatal Strangulation.
Contact
Discuss a strangulation case.
Tell me the jurisdiction and the question you need answered. I'll tell you if I'm the right person for it. If I'm not, I'll say so.
info@firstdoknowharm.comInquiries only. Please don't send privileged or protected material until we've confirmed there's no conflict and agreed how to proceed.