A sharp blow to the head, a rapidly increasing fever, or medical conditions, such as epilepsy or low blood sugar in a person with diabetes, can cause brain seizures, explains WebMD. Brain surgery or brain damage due to a stroke can also lead to a seizure.
Congenital problems; an infection, such as encephalitis or meningitis; or a structural defect in the brain, such as an aneurysm or brain tumor, can cause seizures, according to WebMD. Some parasitic infections, such as toxoplasmosis or tapeworm, can produce seizures. Withdrawal from illegal drugs, alcohol or prescription medicine can lead to brain seizures.
Additional causes of brain seizures include abnormal levels of glucose or sodium in the blood, heat illnesses or heat intolerance, electric shock and poisoning, according to Medline Plus. Individuals with heart disease are at an increased risk for seizures.
A person experiencing a brain seizure may black out for a period of time, convulse, drool or fall suddenly, explains Medline Plus. Some individuals temporarily stop breathing, experience jerking limbs or uncontrollable spasms, or experience a loss of bowel or bladder control when a seizure occurs. Grunting, snorting, sudden eye movements and mood changes may indicate a brain seizure in some patients.