Coma or brain death: Severe brain damage may cause a change in the size and reactivity of the pupils.Repeated vomiting or nausea, convulsions or seizures (shaking or twitching). Slurred speech, weakness, numbness, or decreased coordination. A headache that gets worse and does not go away. Surgery: Eye surgery may result in alterations in pupil size, which can be permanent. Dangerous Signs & Symptoms of a Concussion One pupil larger than the other.Seizure: Sometimes seizures (a disruption of electrical activity in the brain) can cause changes in the pupils, which may be equal or unequal.the 3rd cranial nerve - causing ipsilateral pupil dilation initially (via. The pupil is the black part in the center of the eye. Vision disturbances or unequal pupil size. Migraine: While it is not common, migraines can cause anisocoria. Children sustain different patterns of head injury compared to adults due to. Anisocoria is a condition characterized by unequal pupil sizes 1). A concussion is a traumatic brain injury (TBI) usually caused by a blow to the head.Vision loss: Significant vision defects can affect pupil size and reactivity.Increased intracranial pressure: This can result from a brain tumor, meningitis (inflammation of the fluid around the brain), or a stroke.Trauma: An injury affecting the eye or the brain may cause the pupils to be unequal.Inflammatory conditions, such as MS and sarcoidosis, also can do this. In 34 of cases CT demonstrated a lateralising condition ipsilateral to the side of the FDP and in 9 cases the FDP was contralateral to the side of the CT abnormality. Inflammation: An infection affecting the eye or the cranial nerves can cause anisocoria. In patients presenting with a unilateral FDP, the CT-defined condition was most commonly diffuse brain injury (49) with no obvious lateralising condition. ![]() Cranial nerve damage: This can occur due to a stroke (a blockage of blood flow or bleeding in the brain), brain aneurysm (defect in a blood vessel), or a brain tumor.Multiple sclerosis (MS): MS is a chronic neurological disorder that causes symptoms affecting vision, movement, sensation, and more.
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