Epilepsy is defined as an interruption in the electrical activity in your brain that disrupts its normal function. This disruption causes seizures.\u00a0A person is considered to have epilepsy if they have at least two unprovoked seizures occurring greater than 24 hours apart.\nMost people don\u2019t know why they have epilepsy, but understanding the causes and triggers of seizures can help you lessen the frequency and feel more in control.\nSeizure\u00a0Causes\nCertain conditions can upset the electrical activity in the brain leading to and causing epileptic seizures. Common causes of seizures include:\n\nHead injury\nStroke\nAtherosclerosis in the brain, which is hardening of the arteries\nBrain tumor or lesion\nInfection, such as meningitis or encephalitis\nAlzheimer\u2019s disease\nWithdrawal from alcohol or drugs\n\nYour doctor will perform tests and brain scans to help determine possible epilepsy causes and work with you to develop a treatment plan to manage your epilepsy.\nRELATED:\u00a0Infographic: Epilepsy Causes and Risk Factors\nSeizure Triggers\nIn some cases you may not be able to uncover the exact cause of seizures, or your anti-seizure or anti-epileptic medication may not prevent every seizure. It\u2019s also important to find out what triggers your seizures as well as warning signs that you\u2019re about to have one.\nCommon triggers for epilepsy include:\n\nAlcohol, drugs, and caffeine\nNicotine\nPoor sleep\nVery low blood sugar, particularly if you\u2019re diabetic\nHigh levels of stress\n\nSometimes seizures are more likely to happen at a certain time of day, like at night while sleeping. Keeping a journal of your seizures is the best way to figure out your triggers. Note the time of day, what you were doing, how you felt, your sleep habits, and whether any common triggers were present.\nYou may also want to include notes on what you have eaten to see if any foods trigger seizures. Some people have found that a ketogenic diet, which is low in carbohydrates and high in fat, helps to control seizure activity.\nRELATED:\u00a0Infographic: Seizure First Aid\nSeizure Warning Signs\nMany people also experience what\u2019s called an aura before having a seizure. This is basically your body\u2019s warning signal that one is coming.\nSome common warning signs of seizures include:\n\nSensitivity to smells, sounds, or sights\nAnxiety\nNausea\nDizziness\nVisual changes, such as tunnel vision\n\nLearning your triggers and warning signs can help you gain more control over your seizure activity. For more information on epilepsy and seizure management and treatment, visit the UPMC Department of Neurosurgery.