If you just got shocked by a wire, the first thing to do is separate yourself from the electrical source, then assess how you feel. Most minor shocks from household outlets (120 volts in the U.S.) cause a brief jolt and no lasting harm, but electricity can cause internal damage that isn’t obvious right away. What you do in the minutes and hours after a shock matters.
Get Away From the Source Safely
If you’re still in contact with the wire or electrical source, break the connection immediately. If someone else is being shocked, do not touch them directly. Their body is conducting electricity, and you’ll get shocked too. Instead, turn off the power at the breaker or unplug the device. If you can’t cut the power, use something non-conductive like a dry wooden board, a plastic chair, or a piece of cardboard to push the person or the wire away.
Once you or the person is free from the source, move to a safe area. If the victim is unconscious and not breathing, call 911 immediately and begin CPR if you’re trained. If an AED (automated external defibrillator) is nearby, use it. These devices talk you through each step with voice prompts, and you don’t need medical training to operate one.
Assess Your Symptoms Right Away
After a shock, take stock of how your body feels. Some symptoms are obvious: burns at the entry or exit point, tingling, numbness, or muscle pain. Others are subtle and easy to dismiss. Pay close attention to any chest pain, difficulty breathing, confusion, dizziness, or an irregular heartbeat. These signal that the electrical current may have traveled through your chest or affected your heart rhythm.
Here’s the critical thing to understand about electrical injuries: the damage on your skin does not tell you what happened inside. When your skin is dry, it resists electricity and absorbs more energy at the surface, which can cause visible burns. But when your skin is moist or the contact is firm, electricity passes through with minimal surface damage and delivers more energy to your muscles, nerves, and organs. A shock that leaves no visible mark can still cause serious internal injury.
Why Internal Damage Can Be Hidden
Electricity traveling through tissue can cause protein breakdown, blood clots, muscle death, and swelling deep inside your body. One of the most concerning complications is a condition called rhabdomyolysis, where damaged muscle fibers break apart and release their contents into the bloodstream. This can overwhelm your kidneys.
The telltale signs of muscle breakdown include:
- Dark urine that looks like tea or cola
- Muscle pain that seems more severe than the shock should have caused
- Unusual weakness or fatigue
These symptoms can appear hours after the shock, not right away. If you notice any of them, get to an emergency room. Blood tests measuring a protein called creatine kinase are the only reliable way to confirm whether muscle breakdown is happening, and doctors will repeat those tests to track whether levels are rising or falling.
When electricity passes through an arm or leg, swelling inside the muscle compartments can build up and compress blood vessels and nerves. This is called compartment syndrome, and it’s a surgical emergency. Increasing pain, tightness, or numbness in a limb after a shock warrants immediate medical evaluation.
When a Shock Needs Medical Attention
Not every shock requires a hospital visit. A brief, low-voltage zap from a household outlet that caused a momentary jolt and no lasting symptoms is usually not dangerous. But the line between “fine” and “not fine” is harder to draw than most people think. Even low-voltage shocks below 500 volts can trigger a fatal heart rhythm disturbance if the current passes hand to hand through the chest, especially when your skin is wet.
Go to the emergency room if you experience any of the following after a shock:
- Burns at the contact point or anywhere on your body
- Chest pain or a feeling that your heart is racing or skipping
- Confusion, memory gaps, or loss of consciousness (even briefly)
- Numbness, tingling, or weakness that doesn’t resolve quickly
- Difficulty breathing
- Dark-colored urine
- The shock came from a high-voltage source (power lines, industrial equipment)
- The current passed through your chest (for example, hand to hand or hand to foot on the opposite side)
High-voltage injuries above 1,000 volts almost always require emergency care and monitoring. But doctors have documented cardiac injuries and fatal arrhythmias from standard household voltage too, so voltage alone isn’t a reliable guide to safety.
What Happens at the Hospital
If you go to the ER after an electrical shock, expect an electrocardiogram (ECG) to check your heart rhythm. Doctors will likely order blood work to look for signs of muscle damage, kidney stress, and electrolyte imbalances. A urine test checks for the dark-colored protein that signals muscle breakdown.
If the current may have passed through your chest, or if you have any heart-related symptoms, additional cardiac tests may be ordered. Depending on whether you fell or were thrown by the shock, imaging of your head, chest, or spine may also be needed. Patients with abnormal ECG findings, loss of consciousness, or high-voltage injuries are typically monitored for about 24 hours before being sent home, though there is no universal standard for how long monitoring should last.
Children and Electrical Cord Injuries
Young children who bite or chew on electrical cords face a specific risk. Burns at the corner of the mouth are common with this type of injury, and they carry a particular complication: delayed bleeding from the artery in the lip. This bleeding can occur anywhere from 2 to 21 days after the initial shock, long after the family has gone home. If your child has a mouth burn from an electrical cord, watch carefully for any bleeding from the area in the weeks that follow.
The Days After a Shock
Even if you feel fine immediately after a shock, stay alert over the next 24 to 48 hours. Some effects of electrical injury are delayed. Watch for new or worsening muscle pain, changes in urine color, persistent tingling or numbness, or any heart-related symptoms like palpitations or chest tightness. Psychological effects are also common after electrical injuries. Anxiety, sleep problems, and difficulty concentrating can linger for days or weeks.
If you were shocked while working with home wiring, have the circuit professionally inspected before using it again. A wire that shocked you once will shock you again, and the next time the conditions (wet skin, better contact, longer exposure) could produce a very different outcome.