A taser hit to the head is far more dangerous than one aimed at the torso or limbs, and the injuries it can cause range from seizures and permanent vision loss to actual penetration of the skull. Conducted electrical weapons are designed to deliver a brief, high-voltage shock that causes involuntary muscle contraction, temporarily incapacitating a person. They are not designed to be aimed at the head, but when a dart lands there, the proximity to the brain, eyes, and thin bone changes the risk profile dramatically.
Taser Barbs Can Actually Pierce the Skull
One of the most surprising risks is that the small barbed darts fired from a taser can penetrate the cranium. This sounds unlikely given how thin and lightweight the darts are, but the skull varies in thickness, and certain areas are thin enough to be breached. Research on human skulls has confirmed that taser barbs can fracture and even pierce bone, and real-world cases have proven this is not just a lab curiosity.1PubMed Central. Emergency Medicine Trauma Intracranial Penetrating Taser Dart Injury
In one documented case, emergency department imaging revealed that a taser dart had penetrated the skull to a depth of 4 millimeters, reaching brain tissue underneath. The patient required an emergency craniotomy, a surgical procedure to open the skull and address the damage. The authors of the report stressed that while tasers are not intended to penetrate bone, traumatic brain injury requiring neurosurgical intervention should be considered a real possibility when the weapons are aimed at the head, especially at close range.2PubMed. TASER dart causes penetrating intracranial injury In another case, a 27-year-old man had a taser dart penetrate the frontal part of his skull and damage the underlying frontal lobe.3PubMed. A brain penetration after Taser injury: controversies regarding Taser gun safety
The frontal lobe governs decision-making, personality, and motor planning. Direct mechanical injury to brain tissue from a foreign object introduces risks of infection, bleeding, swelling, and longer-term neurological deficits. These cases are rare in absolute numbers, but they shatter the assumption that tasers can only cause surface-level injuries.
Seizures From Electrical Discharge Near the Brain
Even when a taser dart does not penetrate the skull, the electrical current passing through or near the head can trigger a seizure. In a well-documented case, a police officer was accidentally struck by a taser intended for a suspect during a foot chase. The two barbed darts hit his upper back and the back of his head. Within seconds, the officer collapsed and experienced a generalized tonic-clonic seizure, the kind involving full-body convulsions, loss of consciousness, and postictal confusion afterward.4PubMed Central. Generalized tonic-clonic seizure after a taser shot to the head
The officer was previously healthy with no history of seizure disorders. Follow-up brain imaging and electroencephalograms came back normal, and he experienced no recurrence over more than a year of monitoring. The case is important because it shows that even a single taser discharge near the brain can provoke seizure activity in someone with no pre-existing vulnerability. The authors argued that seizure should be considered a recognized adverse event of taser use, not a freak occurrence. For someone who already has a seizure disorder like epilepsy, the risk would presumably be higher, though the medical literature does not yet contain enough data to quantify that.
Eye Injuries and Vision Loss
The face is one of the worst places to be hit by a taser dart, and the eyes in particular are catastrophically vulnerable. Penetrating taser injuries to the eye have caused a wide spectrum of damage: corneal and scleral lacerations, injury to or loss of the iris, lens dislocation, retinal tears, and bleeding inside the eye. Outcomes for vision after these injuries vary enormously, from complete and irreversible blindness to recovery to a visual acuity of 20/60 or better after treatment.5Trauma Case Reports. Ocular manifestations of TASER-induced trauma
The long-term picture is not encouraging even for patients who initially recover some vision. Cataracts have developed after taser injuries to the eye, a complication also seen with other types of electrical injuries and even non-penetrating taser strikes near the face. Cataract surgery can restore vision in many of those cases, but it adds another procedure and recovery period to what is already a serious injury. The barbed design of taser darts complicates things further: removing a dart that has embedded in or near the eye requires extreme care to avoid causing additional tearing of delicate tissue.
Fatal Falls After Being Tased
There is a secondary mechanism of head injury that gets less attention: falling. When a taser incapacitates someone, every voluntary muscle in the body seizes up, meaning you cannot brace yourself as you go down. If you are standing upright, the result is an uncontrolled fall. On a hard surface, the head often takes the worst of the impact.
A study examining fatal outcomes from taser use identified 16 probable cases of fatal traumatic brain injury caused by falls after being tased. Across an estimated three million field uses at the time, that translates to a risk of roughly 5 in a million, which the researchers noted was actually higher than the theoretical risk of death from the electrical current itself. People struck in the back appeared to face a higher risk of a fatal fall, likely because backward falls tend to result in the back of the head hitting the ground first, with no instinct to protect it. The average age of those who died was 46, significantly older than the typical person subjected to a taser, suggesting that older individuals may be more vulnerable to fatal head injuries from these falls.6PubMed. Fatal traumatic brain injury with electrical weapon falls
This is a meaningful finding because it means even a taser fired at the torso or back can cause fatal head trauma indirectly. The head does not have to be the target for the head to suffer the consequences.
Short-Term Cognitive Impairment
Beyond the physical injuries, taser exposure affects how your brain works in the minutes and hours that follow. A controlled study measured cognitive performance before and after taser exposure and found statistically significant declines in verbal learning and memory. People who had been tased recalled roughly four fewer words on a memory test compared to their pre-exposure baseline, and their delayed recall scores dropped by more than 30%.7Criminology & Public Policy. TASER Exposure and Cognitive Impairment: Implications for Valid Miranda Waivers and the Timing of Police Custodial Interrogations
The good news is that these deficits appeared to be temporary. Scores returned to pre-exposure levels by the one-hour follow-up, and no other areas of cognitive function beyond verbal learning and memory showed significant impairment. The researchers did not find lasting brain damage from a standard taser exposure in healthy volunteers. However, the study’s design involved typical body exposures, not headshots, and the researchers were interested in the legal implications: if someone who was just tased cannot recall information normally, the validity of anything they say or agree to in that window is questionable. Police departments have used this research to argue that custodial questioning should be delayed after taser deployment.
When the taser actually strikes the head, the cognitive effects could reasonably be worse than what this study measured, though direct experimental data on head-specific exposures in humans does not exist for obvious ethical reasons.
Scalp Burns and Barb Removal
The electrical arc from a taser generates significant heat at the point of contact. On the scalp, this can cause burns severe enough to destroy hair follicles permanently. One case report described a 19-year-old man who suffered scalp burns from a taser that resulted in scarring alopecia, a permanent patch of hair loss from destroyed follicles. He eventually underwent a reconstruction procedure using tissue expansion to address the bald area.8PubMed. Alopecia reconstruction by expansion after a scalp burn injury caused by Taser
Burns on the scalp are particularly tricky because the skin there is tightly bound to the underlying bone with relatively little soft tissue padding. This means even a small burn can reach deeper structures quickly, and healing tends to produce noticeable scarring. The barbed darts themselves add a mechanical injury on top of the thermal one. Taser barbs are designed to hook into tissue so they do not fall out, which makes removal more complicated than simply pulling them free. When a barb lodges in bone, as has happened with darts striking the skull or the clavicle, removal sometimes requires surgical tools and anesthesia rather than a simple bedside pull.9PubMed Central. Leveraging Resources to Remove a Taser Barb Embedded in Bone: Case Report
Cardiac Risks Compound the Danger
Head injury is not the only life-threatening risk from a taser. The electrical current can also disrupt the heart’s rhythm, and this risk exists regardless of where the darts land. The current flows through the body between the two dart contact points, and depending on the path, it can pass through or near the heart. Research has found that taser exposure can trigger fatal cardiac arrhythmias, particularly ventricular fibrillation, where the heart quivers ineffectively instead of pumping blood.10Acta Medica Lituanica. The effect of conducted electrical weapons on the human body
This risk increases when the person being tased is under physical stress, has an underlying heart condition, or has drugs or alcohol in their system. The combination of a head injury with a simultaneous cardiac event is particularly dangerous because medical responders have to address two life threats at once, and the treatments can sometimes work against each other (for instance, blood thinners used in some stroke protocols can worsen bleeding from a head wound).
Why Range Matters
Several case reports emphasize that shorter distances increase the severity of head injuries. A taser fired at close range delivers the dart with more velocity, and the dart has less time to slow down or deflect before impact. At very close range, the two darts also land closer together on the body, which concentrates the electrical current in a smaller area rather than spreading it across a wider path. When that concentrated current runs through the head, the neurological effects are likely more intense.
Taser manufacturers generally instruct users to aim for the torso, specifically the area between the waist and chest. Law enforcement training reinforces this. But in chaotic real-world encounters, darts frequently land off-target. The case of the police officer who seized after a headshot happened precisely because the taser was aimed at a suspect and hit a bystander in a completely unintended location. Several of the skull-penetration cases also involved scenarios where the head was not the intended target but ended up being the point of impact. The engineering of the weapon assumes a torso hit; the anatomy of the head is not built to absorb what the weapon delivers.
Hearing and the Temporal Bone
The temporal bone, which sits on the side of the head just above and behind the ear, is one of the thinner regions of the skull. Trauma to this area, from any cause, can damage the middle and inner ear structures, the facial nerve, and the membranes covering the brain. Consequences of temporal bone injuries include hearing loss (both the kind that can be surgically corrected and the kind that cannot), vertigo, facial paralysis on the affected side, leakage of cerebrospinal fluid, and in severe cases, bleeding around the brain.11PubMed Central. Management of temporal bone trauma
No published case report specifically documents a taser dart striking the temporal bone, but given how thin this area is and the documented ability of darts to penetrate skull bone elsewhere, the risk is not hypothetical. Sensorineural hearing loss from inner ear damage carries a poor prognosis regardless of how it is treated, meaning a taser strike to this area could cause permanent deafness on that side. The facial nerve runs through a narrow canal in the temporal bone, and even a dart that lodges in the bone without fully penetrating could cause enough disruption to paralyze the muscles on that half of the face.
What Medical Providers Do After a Head Taser Strike
If someone arrives at an emergency department with a taser dart in or near the head, the first step is imaging, typically a CT scan to determine whether the dart has penetrated bone or entered the cranial cavity. Skull X-rays can show the dart’s position, but CT provides the detail needed to assess brain tissue and bleeding. If imaging shows intracranial penetration, as in the case where a dart went 4 millimeters into the brain, neurosurgery is the likely next step.2PubMed. TASER dart causes penetrating intracranial injury
Dart removal is not straightforward even when the skull is intact. The barbs are designed to resist being pulled out, and yanking on a dart embedded in bone can fragment the barb or cause additional tissue damage. Medical providers have developed techniques using leverage and fulcrum principles to extract darts from bone at the bedside under local anesthesia, avoiding the need for an operating room when the involvement is limited to superficial bone without intracranial penetration.9PubMed Central. Leveraging Resources to Remove a Taser Barb Embedded in Bone: Case Report For darts near the eye, an ophthalmologist is typically involved, since removal without specialist guidance risks turning a survivable eye injury into a permanent one.
Seizure monitoring is part of the workup for anyone tased in the head, even if they appear fine initially. The officer who experienced a tonic-clonic seizure collapsed within seconds, but post-traumatic seizures from penetrating injuries can also develop hours or days later. Patients are usually observed for a period and may receive prophylactic anti-seizure medication depending on the severity of the injury.
The Misconception That Tasers Are Broadly “Non-Lethal”
Tasers are classified as “less-lethal” rather than “non-lethal” in most law enforcement contexts, a distinction that matters. The marketing and public perception of these weapons often conveys an impression of safety that the medical literature does not fully support. Skull penetration, brain injury requiring emergency surgery, permanent blindness, and fatal falls are not outcomes people associate with a weapon described as an alternative to firearms. The overall fatality rate from taser use is low in absolute terms, but the risk is not zero, and certain strike locations, the head above all, shift the odds considerably. Researchers studying fatal falls from taser use found that the risk of dying from a fall-related traumatic brain injury was higher than the risk of dying from the electrical shock itself.6PubMed. Fatal traumatic brain injury with electrical weapon falls That finding alone complicates the narrative that the primary danger of a taser is cardiac arrest.
The medical evidence, taken together, suggests that a taser strike to the head occupies a different category of risk from a strike to the trunk. It can cause direct brain injury, seizures, permanent sensory loss, disfiguring burns, and cognitive impairment, on top of the cardiac and fall risks that apply to any taser deployment. The accumulating case reports have pushed some medical and forensic experts to argue that head strikes should be treated as a distinct and more serious class of taser injury in both emergency medicine protocols and law enforcement training guidelines.