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Puerto Vallarta Logs Up to 80 Scorpion Incidents as Hot Season Peaks
Scorpion stings remain a steady concern for emergency rooms in this Pacific coast resort city, with public health officials reporting dozens of cases each month during the hot, humid season that runs roughly from spring through the fall rains.
Emergency physicians at Vallarta Medical Center (VMC), a private hospital near Plaza Caracol, say they treat scorpion sting patients far less often than the region’s public hospitals do, mainly because of the cost of the antivenom.
The antivenom used to treat stings is expensive at private facilities but is provided free of charge at public hospitals and clinics, regardless of whether a patient is enrolled in Mexico’s public health insurance programs, according to hospital staff.
Jalisco’s public health system sees the bulk of the cases. Health officials with the state’s Eighth Health Region, which includes Puerto Vallarta, have said the public sector handles roughly one to two scorpion sting cases a day, concentrated in the hottest months and the rainy season. The region has logged close to 2,092 sting-related cases so far in 2026, with no deaths or severe cases reported so far. Officials have reported between 60 and 80 scorpion-related incidents in Puerto Vallarta during the hot season.
Health officials say the risk is not limited to summer. Regional health director Jaime Álvarez Zayas told the media outlie Contralinea (published May 25, 2026 ) that “intense heat and dryness push scorpions out of their hiding spots in search of cooler, darker and more humid places, which raises the chance they end up inside homes”.
Stings are most common in rural areas ringing the city — including San Juan, San José and Mismaloya — as well as in hillside neighborhoods such as Vista Hermosa and El Progreso, where humidity and construction debris create favorable conditions for the arachnids, emergency physicians at Vallarta Medical Center told O&APV. Scorpions tend to hide in dark, damp places: piles of dead leaves, gardens, stacked construction materials and rarely disturbed storage areas.
The scorpion species native to the region belongs to the genus Centruroides, considered medically significant. The species is not aggressive and stings only as a defense mechanism, though the venom of some Centruroides species can cause severe reactions, particularly in children, older adults and people with existing health conditions.
Prevention and treatment
Health officials recommend fumigating homes and offices at least twice a year and regularly cleaning storage areas, garages and spaces where items sit undisturbed for long stretches. The state health department also advises installing screens on doors and windows and shaking out clothing and shoes before wearing them.
Anyone stung by a scorpion should go to the nearest health center immediately to begin antivenom treatment, VMC doctors said, warning that an untreated sting can be fatal.
Treatment time varies depending on the patient’s age, the location of the sting on the body — stings closer to the chest, heart or face can allow venom to spread faster — and how quickly the patient reaches medical care. Depending on those factors, treatment can last anywhere from a couple of hours to more than 24 hours.
The public Hospital Regional de Puerto Vallarta, located at Noruega No. 580, Colonia Villas del Real, offers antivenom treatment. The hospital can be reached at 322-299-5601.
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