The Toxic Lady: The Woman Whose Body Poisoned an Entire Emergency Room

On the night of February 19, 1994, a woman was brought into the emergency room of Riverside General Hospital in California. She was unconscious. Her skin had a strange, oily sheen. Her breathing was laboured. She smelled odd — a sweet, garlicky odour that several nurses noted immediately and could not identify.

Her name was Gloria Ramirez. She was thirty-one years old. She had advanced cervical cancer and had been at home managing her symptoms when her condition suddenly deteriorated. Her husband had called an ambulance. By the time she arrived at Riverside General, she was in cardiac arrest.

What happened next has never been fully explained.

Within minutes of beginning treatment, the emergency room staff began collapsing. Not one or two — at least twenty-three hospital workers were affected before the night was over. They fainted, convulsed, experienced shortness of breath, muscle spasms, and disorientation. Five were hospitalized. One nurse was on a ventilator for ten days. Another suffered hepatitis, avascular necrosis of the shoulder, and partial paralysis that lasted months.

Gloria Ramirez died at 8:50 PM, approximately forty-five minutes after arriving at the hospital. She was the only patient in the emergency room who showed no signs of the mystery illness. Whatever came out of her body that night poisoned twenty-three medical professionals. Nobody has definitively explained how.

What the Staff Experienced

The first person affected was a nurse named Susan Kane. While drawing blood from Ramirez, she noticed an ammonia-like smell coming from the syringe and immediately felt faint. She was helped out of the room.

A resident physician, Julie Gorchynski, took over. She also noticed the smell. She noticed something else: strange manila-coloured particles floating in the blood sample, and an oily film on its surface. Gorchynski began to feel dizzy, then lost muscle control in her legs. She was helped to a chair and lost consciousness.

Within minutes, several more staff members were showing the same symptoms. The emergency room was evacuated. A skeleton crew in protective gear continued working on Ramirez while the rest of the staff was treated outside in the car park.

The smell was described differently by different people — ammonia, garlic, fruit, solvent. The diversity of descriptions is itself a data point that researchers have found difficult to account for. Smell perception is individual, but the degree of variation in this case is unusual.

Outside in the car park, the affected staff recovered relatively quickly once removed from the room — though several, as noted, developed longer-term complications. Inside, the small team in protective gear continued working on Ramirez until she was declared dead.

The Investigation

The California Department of Health Services launched an investigation. The case attracted national attention. The scientific questions involved were genuinely difficult.

The leading hypothesis, published in 1994, was developed by two scientists at the Livermore National Laboratory: Patrick Grant and Lowell Wood. They proposed that Ramirez had been self-administering dimethyl sulfoxide — a solvent sometimes used as a home remedy for pain — absorbed through her skin in large quantities. In the hospital, she had been given oxygen, which oxidised the DMSO to dimethyl sulfone. The electrical defibrillation used during her cardiac arrest, they proposed, converted the dimethyl sulfone into dimethyl sulfate — a highly toxic compound that could account for the symptoms experienced by the staff.

The hypothesis was elegant. It connected a known behaviour (DMSO use as a home remedy) to a known chemistry to a plausible toxic product. It was published in the journal New Scientist and was widely reported as the solution.

Problems emerged almost immediately.

Toxicological analysis of Ramirez's blood and tissues did not find the DMSO or its derivatives in the quantities the Grant-Wood hypothesis required. The chemistry, while plausible in theory, had never been demonstrated to produce dimethyl sulfate under the specific conditions of a hospital emergency room. Dimethyl sulfate is a known chemical warfare agent — extraordinarily toxic in very small quantities — and if it had been present in the emergency room in sufficient concentration to affect twenty-three people, the consequences should have been significantly more severe.

The families of the affected staff disputed the investigation's findings for years. At least one lawsuit was filed.

The DMSO hypothesis remains the official explanation. It also remains contested.

Mass Hysteria — The Other Theory

A subsequent analysis proposed that at least some of the affected staff were experiencing mass psychogenic illness — the same mechanism that drove the Dancing Plague of 1518, the Salem witch trials, and dozens of other documented cases where psychological distress manifests as shared physical symptoms.

The mass hysteria explanation is supported by several features of the Riverside case: the rapid spread through the staff, the diversity of symptoms, and the fact that the most severely affected individuals were those closest to the centre of the event and most aware of what was happening.

It is undermined by the documented physical symptoms of the most severely affected cases. The nurse who spent ten days on a ventilator, the physician who developed avascular necrosis of the shoulder — these are not symptoms consistent with a psychogenic origin. They are serious, documented physical injuries.

The most honest assessment of the Riverside case is that it involved at least two overlapping phenomena: a genuine toxic exposure of unknown origin and composition, and a secondary wave of psychogenic responses among staff who knew something was wrong and whose bodies responded to that knowledge. Disentangling the two is, at this point, probably impossible.

What Remains Unknown

Gloria Ramirez was buried in Riverside on February 25, 1994. Her family had to wait months for her body to be released — it had been kept for extended toxicological study. When they finally received her, she was sealed in a metal-lined coffin due to concerns about residual contamination.

The questions that remain unanswered are significant. What were the particles floating in her blood sample? What produced the smell that different staff members described in entirely different terms? Why did the most severely affected individuals develop complications — avascular necrosis, hepatitis, partial paralysis — that are not associated with any of the proposed toxic agents?

And why was Gloria Ramirez, alone in that room, apparently unaffected by whatever was coming out of her?

She was already dying. Her cancer was advanced. There are explanations for why a body in her condition might not have responded to a toxic compound in the same way a healthy body would. But the image is a strange one: a woman dying of cancer in an emergency room, and everything that emerged from her body walking out through the staff around her while she herself lay still.

Twenty-three people were poisoned in Riverside General Hospital on the night of February 19, 1994. We do not know by what.

• Sources and Further Reading: The Grant-Wood hypothesis was published in New Scientist in 1994. The California Department of Health Services investigation report is a matter of public record. The case is extensively documented in Gorchynski v. County of Riverside, the lawsuit filed by affected staff members. Patrick Bellew and Kirsten Weir's analysis of the mass psychogenic component was published in the Southern California Psychiatrist. The case remains a subject of ongoing discussion in both toxicology and emergency medicine literature.