KUALA LUMPUR, May 11 — Road accidents continue to pose a major public safety concern in Malaysia. As of April 2026, 221,661 cases have been recorded nationwide, according to the Royal Malaysia Police Traffic Investigation and Enforcement Department.
Behind these numbers are collisions that happen in seconds, but can leave injuries that unfold over hours, especially when the head is involved.
Head injuries are among the most concerning outcomes of road traffic accidents, ranging from mild concussions to serious brain trauma and skull fractures. According to Dr Cyrus Lai, consultant emergency physician at Sunway Medical Centre Velocity (SMCV), road traffic accidents remain one of the leading causes of traumatic brain injury in Malaysia and globally.
These injuries may happen through a direct hit to the head, the sudden force of the body being thrown forward and back, or rotational movement during impact, with some cases involving brain bleeding or skull fractures that require urgent intervention.
What makes head injuries especially dangerous is that they are not always obvious at the scene. A person may remain conscious, speak normally or appear stable, while bleeding, swelling or injury to the brain continues to develop internally.
“A patient may look well initially and still have internal bleeding, brain swelling, or a skull fracture. Serious head injuries may evolve over hours, which is why symptoms and neurological status must be monitored closely,” said Dr Lai.
Understanding Head Injuries: Concussions, Brain Trauma, And Skull Fractures
Not all head injuries carry the same level of risk, as they may present across a wide spectrum from concussion to brain trauma and skull fracture.
A concussion may temporarily disrupt how the brain functions, while more serious brain trauma can involve internal bleeding or swelling. A skull fracture, on the other hand, occurs when the force of impact is strong enough to break the bone protecting the brain.
According to Dr Mah Jon Kooi, consultant neurosurgeon at SMCV, what separates these injuries is not always how the patient appears immediately after the accident, but whether there is structural damage, pressure on the brain or the need for urgent intervention.
Even without visible bleeding or an open wound, the soft brain tissue can still jolt inside the rigid skull during impact, causing injury at a cellular and functional level.
While skull fractures are often associated with high-energy impact, concussions may still occur in lower-velocity collisions due to rotational forces on the brain.
Dr Lai explained that head injuries may involve primary injury, where the brain is affected at the moment of impact through direct force, acceleration-deceleration movement or rotational shear, as well as secondary injury, where complications such as cerebral oedema (brain swelling), hypoxia, (lack of oxygen), or hypotension (low blood pressure reduces blood flow to the brain), worsen the initial trauma.
This makes head injuries difficult to judge based on the appearance of the accident alone, as even a less dramatic collision can still affect brain function.
Recognising Red Flags And Behavioural Changes After A Head Injury
Although some head injuries may initially seem minor, certain symptoms can signal more serious brain trauma and require urgent medical attention.
Early signs may include persistent headaches, confusion, memory lapses, or subtle changes in thinking and behaviour.
As the condition progresses, more concerning symptoms may develop, such as repeated vomiting, worsening headaches, slurred speech, weakness or numbness, and difficulty with coordination. In more severe cases, red flags include unequal pupil size, bleeding or fluid from the nose or ears, seizures, or loss of consciousness.
Any symptoms that persist, fail to improve, or worsen over time should not be ignored and require prompt medical evaluation.
It is also important to note that symptoms may not appear immediately after the accident. Individuals may seem well initially, only to develop warning signs hours later.
This delayed onset highlights the importance of close observation within the first 24 to 48 hours, with family members or caregivers monitoring for subtle changes such as confusion, unusual drowsiness, difficulty concentrating, or changes in speech and coordination, which may signal a more serious underlying issue.
Beyond physical symptoms, head injuries can also affect mood and behaviour, particularly when the frontal lobe is involved. Individuals may experience irritability, anxiety, depression, or changes in personality and self-control.
While most mild head injury symptoms improve within one to two weeks, some may persist for weeks or months, known as post-concussional syndrome. In more severe cases, these effects can be long-term or permanent, underscoring the importance of early detection, proper monitoring, and timely medical care.
The Importance Of Immediate A&E Assessment And Underlying Complications
Once a head injury is suspected, the priority is no longer just whether the patient looks well, but whether the brain is being protected from further damage.
In the Accident and Emergency (A&E) Department, assessment begins with stabilising the patient, protecting the cervical spine where needed, and checking the neurological functions through level of consciousness, pupil response, and limb strength.
Imaging may also be required, since a CT scan may help detect bleeding, swelling or fractures that are not visible through clinical assessment alone.
From a neurosurgical perspective, the most concerning complications are those that increase pressure within the skull. If bleeding expands or swelling worsens, blood flow to the brain may be restricted, increasing the risk of permanent neurological damage.
“The rigid skull allows for very little expansion, and excessive pressure may restrict blood flow to the brain, leading to ischemia (a condition where blood flow to the brain is reduced or interrupted, resulting in insufficient oxygen and nutrients needed for normal brain function) and permanent damage,” said Dr Mah.
In severe cases, this pressure can lead to brain herniation, where brain tissue is compressed and displaced, making early detection and close monitoring critical.
Beyond bleeding and swelling, the impact of a head injury can also affect the way a person thinks, speaks, moves or behaves, depending on the area of the brain involved.
Dr Mah explains that trauma to areas such as the frontal lobe may affect judgement, speech and mood regulation, while more severe injuries may lead to longer-lasting changes in memory, behaviour or personality.
These changes may not be immediately obvious at the scene, but can significantly affect recovery, independence and quality of life if the injury is not properly assessed.
Management And Treatment
After the initial assessment, the next step is deciding how closely a patient needs to be monitored and whether the injury can heal with supportive care or requires urgent intervention. For milder cases such as concussion, this may involve observation, adequate rest and a gradual return to normal activities under medical advice and physiotherapy if needed.
Dr Mah notes that even mild head injuries may still require monitoring, as the goal is not only to support recovery, but to detect any signs of secondary injury before the condition worsens.
The treatment becomes more urgent when scans show bleeding, swelling or pressure affecting the brain. Dr Lai explains that patients who remain stable may be observed closely, while those with worsening neurological signs or pressure on the brain may require urgent neurosurgical review.
If a patient is discharged, caregivers must continue monitoring for red flags such as worsening headache, repeated vomiting or increasing confusion, which should prompt immediate return to the A&E Department.
In severe cases, treatment may move beyond observation and medication. Dr Mah explains that surgery may be needed when bleeding expands, pressure rises or the patient does not respond to initial treatment. The priority is to relieve pressure, stop bleeding and prevent further damage to the brain.
Beyond the acute phase, recovery may also involve rehabilitation to support physical, cognitive, and daily functional recovery, particularly for patients experiencing neurological or cognitive impairment.
The recovery and rehabilitation process can vary widely depending on the severity of the injury. Patients with mild head injuries are often able to return to their usual daily activities within one to two weeks.
However, those with moderate to severe head injuries typically require a longer period of recovery, which may include structured rehabilitation programmes involving physiotherapy, occupational therapy, and cognitive support.
In some severe cases, patients may experience lasting or permanent impairments that affect their independence, mobility, or ability to return to work.
If head injuries such as concussion, brain trauma, or skull fractures are not treated promptly, the long-term consequences can be significant. These may include persistent cognitive impairment such as memory loss and difficulties with decision-making, as well as emotional and behavioural changes including depression and personality shifts.
In addition, untreated head injuries may increase the risk of neurodegenerative conditions such as Alzheimer’s disease, chronic traumatic encephalopathy (CTE), and Parkinson’s disease.
Patients may also experience chronic headaches and a higher risk of seizures, highlighting the importance of early diagnosis, appropriate treatment, and ongoing monitoring to reduce the risk of long-term complications.
A Wake-Up Call For Road Users
A head injury after a road accident should not be treated as minor simply because there is no visible wound or because the person appears alert after the incident.
By the time symptoms become more obvious, internal complications may have already progressed, narrowing the window for effective treatment.
Early assessment at the A&E Department allows doctors to stabilise the patient, identify hidden injuries and decide whether observation, medical treatment or surgery is needed.
For both consultants, the message is clear: “time is brain” when it comes to head injuries, and early diagnosis can prevent a seemingly minor injury from developing into a severe condition.
Following any significant head impact, especially after a road accident, seeking medical assessment early and monitoring symptoms closely can make a meaningful difference to recovery, long-term function and survival.
