The FDA's Manufacturer and User Facility Device Experience (MAUDE) database is the largest public repository of medical-device adverse-event reports in the United States. An analysis of aesthetic energy-device events — including cryolipolysis (CoolSculpting), aesthetic lasers, and related devices — reveals 56,425 reports spanning three decades, with a dramatic concentration in the past five years.
Two findings stand out. First, CoolSculpting (cryolipolysis) accounts for the majority of aesthetic energy-device injury reports, driven almost entirely by paradoxical adipose hyperplasia (PAH) — a condition where treated fat paradoxically grows harder and larger instead of shrinking. Second, aesthetic laser injuries cluster around burns, scarring, and pigment changes — the classic complications of energy delivery to skin.
This article breaks down the MAUDE data by device type, event category, injury pattern, and year — and explains what the trends mean for patients considering energy-based treatments and providers operating these devices.
What MAUDE is and what it captures
MAUDE collects reports from device manufacturers (who are required to report deaths and serious injuries), user facilities (hospitals and ambulatory surgery centers), and voluntary reporters (physicians, patients). Like FAERS for drugs, it is a passive surveillance system with significant under-reporting.
MAUDE reports include:
- Event type: Injury, Malfunction, Death, or Other
- Device information: Brand name, generic name, product code, manufacturer
- Patient outcomes: Required intervention, hospitalization, disability, death, life-threatening
- Narrative text: Free-text description of the event
The analysis here covers FDA product codes GEX (powered laser surgical instruments) and OOK (dermal cooling devices, primarily CoolSculpting), filtered for aesthetic applications.
The CoolSculpting PAH signal
Of the 56,425 aesthetic energy-device events, 11,257 involve CoolSculpting systems. Of those, 11,052 are classified as injuries — the highest injury concentration of any aesthetic device in the database.
What is paradoxical adipose hyperplasia?
PAH is a rare but well-documented adverse effect of cryolipolysis in which the treated fat pad develops a firm, enlarging mass rather than shrinking. The tissue becomes hardened, often visibly protruding, and does not resolve on its own. Surgical excision (typically liposuction or direct excision) is usually required.
PAH by the numbers
| Metric | Value |
|---|---|
| Total CoolSculpting events in MAUDE | 11,257 |
| Classified as injuries | 11,052 |
| Events mentioning "paradoxical adipose" | 10,343 |
| Events mentioning PAH | 8,179 |
| Patient outcome: required intervention | 11,023 |
| Patient outcome: death | 2 |
| Patient outcome: hospitalization | 37 |
| Patient outcome: disability | 177 |
PAH dominates the CoolSculpting data: 10,343 of 11,052 injury reports (93.6%) mention "paradoxical adipose" or "PAH" in the narrative. Other reported outcomes include pain (206), contour irregularity (133), scarring (80), and nerve-related symptoms (50).
The 2023 spike
CoolSculpting MAUDE events show a dramatic time pattern:
| Year | CoolSculpting events |
|---|---|
| 2018 | 8 |
| 2019 | 43 |
| 2020 | 17 |
| 2021 | 1,163 |
| 2022 | 1,977 |
| 2023 | 5,499 |
| 2024 | 1,277 |
| 2025 | 917 |
The 2023 spike to 5,499 reports represents a 178% increase over 2022. Several factors drove this:
- Growing PAH awareness. Social media discussion of PAH — including high-profile cases like model Linda Evangelista's public disclosure in 2021 — led more patients to recognize and report their symptoms.
- Manufacturer reporting. Allergan (now AbbVie) initiated voluntary event reporting as part of PAH-related regulatory interactions.
- Cumulative treated patients. With millions of CoolSculpting cycles performed, even a low incidence rate generates a large absolute number of PAH cases.
The 2024–2025 decline suggests the reporting surge has partially resolved — though this may also reflect the closing of a reporting backlog rather than a true decline in PAH incidence.
What the PAH rate means for patients
The reported incidence of PAH after cryolipolysis has been estimated at 0.0051% (approximately 1 in 20,000 treatments) in the original pivotal clinical trial data. The MAUDE data cannot produce a reliable updated incidence rate because the total number of treatments is not recorded in the database. However, the volume of reports — over 10,000 — suggests either the real-world rate is higher than the clinical-trial estimate, reporting has become more complete, or both.
Patients considering CoolSculpting should:
- Ask their provider whether the specific CoolSculpting applicator and settings are appropriate for their anatomy
- Understand that PAH, while rare, requires surgical correction and may leave visible contour deformity
- Know that PAH risk may vary by treatment site, applicator type, and patient factors that are still being studied
Aesthetic laser injuries
The second major category of aesthetic energy-device events involves aesthetic lasers — primarily for hair removal, skin resurfacing, pigmentation treatment, and vascular indications.
Event types
| Event type | Count |
|---|---|
| Malfunction | 9,443 |
| Injury | 3,540 |
| Other | 467 |
| Death | 51 |
| No answer provided | 26 |
Aesthetic laser events total 13,658 filtered reports. Malfunctions (device failures, calibration errors, power irregularities) outnumber injuries nearly 3:1. The injury subset (3,540 events) represents actual patient harm.
Injury patterns
Text analysis of the 3,540 injury narratives reveals the following patterns:
| Pattern | Mentions |
|---|---|
| Burn | 977 |
| Scar / scarring | 398 |
| Blister | 227 |
| Pigment change (hyper- or hypopigmentation) | 224 |
| Pain | 179 |
| Eye / vision-related | 158 |
| Erythema (redness) | 47 |
| Swelling / edema | 70 |
| Infection | 56 |
| Nerve-related | 25 |
Burns are the most common injury, mentioned in 977 of 3,540 injury narratives (27.6%). Laser burns occur when energy delivery exceeds the tissue's thermal damage threshold — from incorrect fluence settings, inadequate cooling, poor skin-contact technique, or failure to account for skin pigmentation.
Pigment changes (hyperpigmentation or hypopigmentation) appear in 224 reports. This is the classic PIH (post-inflammatory hyperpigmentation) or hypopigmentation risk for patients with Fitzpatrick skin types IV–VI, who have higher melanin content and are more susceptible to pigmentary complications from laser and light-based treatments.
Eye and vision-related injuries (158 mentions) underscore a safety concern specific to facial laser treatments: without appropriate eye protection, reflected or misdirected laser energy can cause retinal damage, corneal burns, or vision changes.
Year trend
| Year | Aesthetic laser events |
|---|---|
| 2018 | 810 |
| 2019 | 747 |
| 2020 | 718 |
| 2021 | 1,010 |
| 2022 | 962 |
| 2023 | 1,022 |
| 2024 | 1,030 |
| 2025 | 1,418 |
Aesthetic laser events have been relatively stable at ~1,000 per year, with a notable increase to 1,418 in 2025 — potentially reflecting expanded use of at-home and consumer-grade devices, or improved reporting.
Device manufacturers with the most reports
| Manufacturer | Events |
|---|---|
| Lumenis | 2,971 |
| Quanta System | 1,844 |
| Boston Scientific | 1,340 |
| Candela | 429 |
| Solta Medical | 215 |
Manufacturer report volume correlates with market share and time on market. Lumenis, which produces widely used aesthetic laser platforms (M22, ResurFX, LightSheer, AcuPulse), leads in reports. Candela and Solta Medical (now part of Bausch Health) also appear prominently.
Deaths in the data
The MAUDE dataset for aesthetic energy devices includes 111 death reports — 6 from CoolSculpting and 51 from aesthetic lasers. These numbers demand careful interpretation:
- Death reports in MAUDE do not establish that the device caused the death. Many death reports describe events that occurred in hospital settings where the device was present or being used, but the death resulted from underlying patient conditions, anesthesia complications, or other causes.
- The 51 aesthetic laser death reports include cases where the laser was used in surgical settings (e.g., intraoperative use) in patients with significant comorbidities, not purely cosmetic outpatient procedures.
- The 6 CoolSculpting death reports include cases reported during the postmarket surveillance period where causation was not established.
For context: the American Society for Dermatologic Surgery estimates that over 10 million cosmetic procedures using energy-based devices are performed annually in the US. The number of reported deaths relative to procedure volume is extremely small.
What this means for patients
CoolSculpting PAH is real and documented. Over 10,000 MAUDE reports describe paradoxical adipose hyperplasia. It is rare but not negligible. If you are considering cryolipolysis, ask your provider about PAH incidence, how they screen for risk factors, and what correction options they offer if PAH develops.
Laser burns are the most common energy-device injury. Burns, scarring, and pigment changes are preventable with proper device settings, skin-type assessment, and cooling protocols. Providers should use test spots on darker skin tones before full treatment.
Eye protection is non-negotiable. Any laser or intense-light treatment near the face requires appropriate protective eyewear — for both the patient and the operator.
Malfunctions happen. Device malfunctions (power surges, calibration drift, cooling failures) account for the majority of laser-related MAUDE reports. Providers should follow manufacturer maintenance schedules, verify settings before each treatment, and stop treatment immediately if the device behaves unexpectedly.
What this means for providers
- PAH counseling is now standard of care for cryolipolysis. The volume of MAUDE reports and high-profile patient disclosures mean that informed consent for CoolSculpting must explicitly address PAH risk, potential need for surgical correction, and the limitations of non-invasive fat reduction.
- Fitzpatrick skin-typing is a safety gate, not a preference. The 224 pigment-change reports in the laser data are concentrated in patients with darker skin tones treated with devices or settings inappropriate for their melanin content.
- MAUDE is an undercount. Passive surveillance captures a fraction of real-world events. The actual injury burden from aesthetic energy devices is higher than MAUDE reports suggest.
Limitations
- MAUDE is a passive reporting system with significant under-reporting; the numbers represent a floor, not a ceiling.
- Report volume is influenced by manufacturer reporting practices, media attention, and litigation activity — not just device safety.
- Many GEX (laser) events involve non-aesthetic applications (urology, ophthalmology, general surgery). The filtering used here attempts to exclude these, but some non-aesthetic events may remain.
- Causation is not established in MAUDE reports. A device being listed in a report does not mean it caused the described event.
Sources
- FDA MAUDE (Manufacturer and User Facility Device Experience) database. https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfmaude/search.cfm
- Nazarian RM, et al. FDA MAUDE data on complications with lasers, light sources, and energy-based devices. Lasers Surg Med. 2015. https://pubmed.ncbi.nlm.nih.gov/25655709
- Farberg AS, et al. FDA MAUDE database reported adverse events on noninvasive body contouring devices. Dermatol Surg. 2022. https://pubmed.ncbi.nlm.nih.gov/35916105
- Physicians Weekly. AEs of Non-Invasive Body Contouring: FDA MAUDE Database. https://www.physiciansweekly.com/post/aes-of-non-invasive-body-contouring-fda-maude-database
- Data source: FDA MAUDE adverse-event database (aesthetic devices); analysis by AestheticMedGuide, run date 2026-06-10. Analysis sample: 423,768 MAUDE event records for aesthetic device product codes, filtered to 56,425 energy-device events and 13,658 aesthetic laser/cooling device events.
