Sufferers also often complain of blurred vision. This not only causes persistent dilated pupils but headache pain will be focused around the eyes. This specific type of severe headache is thought to cause abnormal paralysis of the motor nerves of the eye. Here are some of the reasons why pupils may be different sizes or shapes.ĭilated pupils can be a symptom of certain migraines. Sometimes your pupils will return back to their normal size without need for treatment, but you should seek medical attention if the condition persists or has followed a head trauma or injury. When your pupils are different sizes, it is called anisocoria and there are several different causes. Pupils do this by contracting and dilating, thus making them appear smaller and larger respectively. The pupil is the hole in the centre of the iris (the coloured part of the eye) and its primary function is to control the amount of light that enters the eye. However, if there is a significant difference or one of the pupils has only recently changed there could be an underlying issue. Not to mention that CT scans do use radiation, so they are only recommended when absolutely necessary.Some people have pupils that are slightly different sizes or shapes, so variations can be normal and are usually harmless. This is because mild brain injuries, such as concussions, do not show up on a CT scan and can generally be treated without any significant risks. In general, a CT scan is not needed for most people with a concussion or other types of mild brain injuries. By looking at a CT scan image, doctors can identify any evidence of bleeding, swelling, or skull fractures. A CT scan is often used to diagnose head injuries because it can show the extent of any damage to the brain. By seeking medical attention, your doctor will be able to assess the severity of your head injury and determine if a CT scan is needed.ĬT, or computed tomography, scans are a type of x-ray that produces detailed images of the inside of the body. It is especially important to seek emergency care right away if you lose consciousness or if you experience confusion or disorientation. In addition to indicating a concussion, these symptoms can also indicate another type of brain injury. When it comes to head injuries, it is always recommended to seek medical care if you are experiencing one or more of the aforementioned concussion symptoms. A skull fracture means that damage to the brain is more likely. Skull fracture:Ī skull fracture occurs when one or more bones in the skull are broken. An intracerebral hemorrhage occurs when there is bleeding within the brain tissue and a subarachnoid hemorrhage occurs when there is bleeding around the brain. Hemorrhage:Ī hemorrhage is a type of bleeding. This type of head injury can cause swelling and bruising on the scalp or in the brain. A hematoma can occur when there is an injury to the scalp, such as from a fall or car accident. This is when the brain swells from the injury and presses against the skull Hematoma:Ī hematoma is a collection of blood that pools outside of the blood vessels. This can cause the brain to move around inside the skull and lead to swelling of the brain tissue and damage to the brain cells. This is a type of brain injury that occurs when the head is shaken violently, such as in a car accident.
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