Most scorpion stings in Arizona cause intense local pain but resolve on their own with basic first aid. The exception is the Arizona bark scorpion, the only species in the state with venom potent enough to cause serious, body-wide symptoms. Knowing the difference between a routine sting and a dangerous one, and acting quickly in either case, can make a significant difference in how things play out.
Immediate First Aid Steps
Clean the sting site with mild soap and water. Apply a cool compress (ice wrapped in a cloth, not bare ice directly on skin) to help ease the pain. If you were stung on an arm or leg, rest that limb in a comfortable, supported position rather than dangling it.
For mild pain, over-the-counter acetaminophen or ibuprofen is effective. You can call the Arizona Poison and Drug Information Center at 1-800-222-1222 any time, day or night. The line is free, confidential, and staffed around the clock. The specialists there can help you assess whether your symptoms need medical attention or can be managed at home.
What Not to Do
One critical mistake people make is treating a scorpion sting like an allergic reaction. The University of Arizona Health Sciences warns against taking diphenhydramine (Benadryl), other antihistamines, or using an epinephrine auto-injector for a scorpion sting. Scorpion envenomation is not an allergic reaction, and these medications can actually worsen symptoms like rapid heart rate and high blood pressure. Do not apply a tourniquet or try to cut or suction the sting site.
The one exception: if you know you’ve had a true allergic reaction to a previous scorpion sting (hives, throat swelling, anaphylaxis), that is a separate situation and warrants emergency care.
What Symptoms to Watch For
Most stings fall into the mild category: sharp, burning pain at the sting site, sometimes with numbness or tingling that spreads slightly up the limb. This is uncomfortable but not dangerous, and it typically fades over several hours.
Bark scorpion stings can escalate beyond local pain. The venom affects sodium channels in your nerves, which can cause symptoms throughout the body. Get to an emergency room or call 911 if you notice any of the following:
- Numbness spreading beyond the sting area or throughout the body
- Difficulty breathing or swallowing
- Muscle twitching, jerking limbs, or involuntary body movements
- Unusual eye movements, roving or darting eyes
- Slurred speech or a thick-feeling tongue
- Excessive drooling or salivation
- Seizure-like activity
- Restlessness or agitation that seems out of proportion
These symptoms can develop within one to three hours of the sting. If you’re unsure what type of scorpion stung you, err on the side of caution and call the poison center.
Children Are at Higher Risk
Young children and infants are the most vulnerable to serious complications from bark scorpion stings. A child’s smaller body means the same dose of venom has a proportionally larger effect. In babies and toddlers, the sting itself may go unwitnessed, making the symptoms confusing.
In children, systemic envenomation can look like inconsolable crying, muscle thrashing, drooling, unusual head and neck movements, rapid eye movements, difficulty breathing, nausea, and vomiting. Because young children can’t describe what they’re feeling, any combination of these signs after a possible sting warrants emergency care. Older adults face elevated risk as well.
What Happens at the Hospital
For severe envenomation, Arizona hospitals have access to an antivenom specifically designed for bark scorpion stings. It’s used when patients develop clinically significant symptoms like loss of muscle control, roving eye movements, slurred speech, respiratory distress, excessive salivation, or vomiting. The antivenom works by neutralizing the venom’s effect on nerve signaling, and doctors aim to administer it as soon as possible after symptoms appear.
Most people who receive antivenom see improvement within hours. For milder cases that still need monitoring, hospital visits typically involve pain management and observation until symptoms stabilize.
Preventing Stings at Home
Bark scorpions are small, light brown, and excellent climbers. They can squeeze through gaps as narrow as a credit card’s thickness, which means prevention is largely about sealing your home and reducing what attracts them.
Start with entry points. Caulk cracks in your foundation, door frames, and window frames. Check weather stripping around all exterior doors, including the garage door, for gaps. Seal around utility penetrations where pipes or wires enter the house.
Inside, eliminate hiding spots. Keep garages, closets, and attics uncluttered. Store items off the floor when possible, and shake out shoes, clothing left on the ground, and bedding before use. Scorpions follow their food source, so controlling other insects in your home (especially crickets) reduces what draws scorpions inside in the first place. Fix leaky faucets and pipes, since scorpions seek out moisture.
For monitoring, sticky traps placed along baseboards and in closets can help you gauge whether scorpions are getting indoors. A UV blacklight flashlight is a useful tool for nighttime inspections, as scorpions glow brightly under ultraviolet light. If you’re finding them regularly despite sealing efforts, professional pest control services familiar with Arizona’s bark scorpion can target problem areas more aggressively.