Scorpions

Definition

This article describes the effects of a scorpion sting.

This article for information only. DO NOT use it to treat or manage a scorpion sting. If you or someone you are with is stung, call the local emergency number (such as 911), or the local poison control center can be reached directly by calling the national toll-free Poison Help hotline (1-800-222-1222) from anywhere in the United States.

Poisonous Ingredient

Scorpion venom contains many toxins as well as the chemical histamine.

Where Found

This venom is found in scorpions and related species. More than 40 species of scorpions are found in the United States.

The class of animals to which scorpions belong contains the largest number of venomous species known.

Scorpion stings kill more people around the world than any other animal, except snakes (from snake bites). However, most varieties of North American scorpions are NOT venomous. The venomous ones in the United States live mainly in the southwestern deserts.

Symptoms

In mild cases, the only symptom may be a mild tingling or burning at the site of the sting.

In severe cases, symptoms in different parts of the body may include:

EYES AND EARS

LUNGS

NOSE, MOUTH, AND THROAT

HEART AND BLOOD

KIDNEYS AND BLADDER

MUSCLES AND JOINTS

NERVOUS SYSTEM

SKIN

STOMACH AND INTESTINAL TRACT

Home Care

Most stings from North American scorpions do not need treatment. Children 6 years and younger are more likely to have harmful effects from venomous types of scorpions.

Before Calling Emergency

Have this information ready:

Poison Control

Your local poison control center can be reached directly by calling the national toll-free Poison Help hotline (1-800-222-1222) from anywhere in the United States. This national hotline will let you talk to experts in poisoning. They will give you further instructions.

This is a free and confidential service. All local poison control centers in the United States use this national number. You should call if you have any questions about poisoning or poison prevention. It does NOT need to be an emergency. You can call for any reason, 24 hours a day, 7 days a week.

What to Expect at the Emergency Room

Take the insect with you to the hospital, if possible. Make sure it is in a tightly closed container.

The health care provider will measure and monitor the person's vital signs, including temperature, pulse, breathing rate, and blood pressure. The wound and symptoms will be treated. The person may receive:

Outlook (Prognosis)

Death from scorpion stings rarely occurs in people older than 6 years. If symptoms rapidly become worse within the first 2 to 4 hours after the sting, a poor outcome is more likely. Symptoms may last several days or longer. Some deaths have occurred as late as weeks after the sting if complications develop.

Scorpions are nocturnal predatory animals that usually spend the day under rocks, logs, or floors and in crevices. DO NOT put your hands or feet in these hiding places.

References

Curtis AM, Erickson TB. Venomous animal injuries. In: Walls RM, ed. Rosen's Emergency Medicine: Concepts and Clinical Practice. 10th ed. Philadelphia, PA: Elsevier; 2023:chap 53.

James WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM. Parasitic infestations, stings, and bites. In: James WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM, eds. Andrews' Diseases of the Skin: Clinical Dermatology. 13th ed. Philadelphia, PA: Elsevier; 2020:chap 20.

Suchard JR. Scorpion envenomation. In: Auerbach PS, Cushing TA, Harris NS, eds. Auerbach's Wilderness Medicine. 7th ed. Philadelphia, PA: Elsevier; 2017:chap 44.



Review Date: 7/1/2023
Reviewed By: Jesse Borke, MD, CPE, FAAEM, FACEP, Attending Physician at Kaiser Permanente, Orange County, CA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
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