Gloria Cecilia Ramirez, a resident of Riverside, California, became the subject of one of the most unusual medical mysteries in modern history. Following her sudden and puzzling death, she came to be known as the “Toxic Lady.”
On the night of February 19, 1994, at 8:15 p.m., Ramirez was admitted to Riverside General Hospital with abnormal heart rhythm, low blood pressure, and rapid breathing. She was in the terminal stage of cervical cancer. To stabilize her, the attending physicians administered sedatives including diazepam, midazolam, and lorazepam. When these failed to improve her condition, the team attempted to defibrillate her heart.
At this point, several staff members noticed a strange oily sheen on Ramirez’s skin, and some reported a strong garlic-like odor coming from her mouth. Nurse Susan Kane drew a blood sample and detected an ammonia-like smell coming from the syringe. She passed the sample to medical resident Julie Gorchynski, who observed unusual particles in the blood resembling manila-colored crystals. Shortly afterward, Kane collapsed, followed by Gorchynski, who developed nausea before losing consciousness. A third staff member, respiratory therapist Maureen Welch, also fainted.
The emergency room was evacuated, and patients were temporarily moved to the parking lot. In total, 23 hospital workers became ill, and five required hospitalization. Despite repeated CPR and defibrillation attempts, Ramirez was pronounced dead at 8:50 p.m. from kidney failure associated with advanced cervical cancer.
To explain the bizarre sequence of events, scientists at the Lawrence Livermore National Laboratory proposed an unusual chemical theory. They suggested that Ramirez had been using dimethyl sulfoxide (DMSO) as a home remedy for pain. DMSO is known to have a garlic-like odor. In the presence of oxygen during emergency treatment, DMSO may have been oxidized into dimethyl sulfone (DMSO₂), a crystalline compound. This could account for the particles seen in her blood. Furthermore, they theorized that the electric shocks from defibrillation might have converted DMSO₂ into dimethyl sulfate (DMSO₄), a highly toxic substance, which could explain why so many healthcare workers quickly became ill.
Although this theory offers a plausible explanation for many of the observations, it has not been universally accepted. As a result, the exact cause of Gloria Ramirez’s mysterious death remains unresolved to this day.