Johns Hopkins Medicine: “Evaluation of a First-Time Seizure,” “Diagnosing Seizures and Epilepsy.” Mayo Clinic: “Seizures,” “Vagus Nerve Stimulation.” American Academy of Neurology. What are seizures and what causes seizures? Seizures are a dramatic manifestation of a serious disturbance in brain activity. Definition: Excessive, abnormal cortical neuronal activity resulting in a variety of physical symptoms. A diverse variety of conditions and disorders can precipitate seizure activity in adults. However, it can be caused by other things, including a head injury, alcohol poisoning, lack of oxygen, after taking certain drugs, or if someone with diabetes has a 'hypo' where their blood glucose is too low. “Atonic” means loss of muscle tone. Definition: Excessive, abnormal cortical neuronal activity resulting in a variety of physical symptoms. It's possible to have just one type of seizure, or more than one type. [scald=251:sdl_editor_representation {"link":""}] The kind of seizure an older person may have depends on where the electrical disturbance takes place and how much of the brain is affected. Provoked seizure: An acute symptomatic seizure that occurs at the time of or within 7 days of an acute neurologic, systemic, metabolic, or toxic insult (Huff 2014). But those … Finding the cause of your seizures can take some time. Generalized seizures happen when waves of electrical activity swamp the whole brain at once. This type of seizure is also known as akinetic or drop seizures. Brain injury, brain swelling and increased pressure on the brain as well as chemical imbalances are common causes of adult seizure … 2 ÜMost early seizures (i.e., <2 weeks) manifest within the first 24 to 48 hours of a stroke, and only a small percentage of patients develops epilepsy. Re: First-Time Seizures Around 40 yrs old Submitted by tino on Fri, 2007-07-20 01:30 i am 50 and i have recently been experiencing odd symptoms that a neuro diagnosed as simple partials, we have no history of this in our family and no reason i could think of that i would have this. The most common cause of seizure activity in seniors is cerebrovascular disease, occurring more frequently as a consequence of a hemorrhagic stroke than the nonhemorrhagic type. While it’s not always possible to determine why a seizure happened, you should always consult a neurologist the first time you experience a seizure. Your doctor can use medical tests to check for some underlying health conditions. Continued Causes of Epilepsy. In adults, the most common cause of a seizure, also known as a convulsion or fit, is epilepsy. A seizure may be an indication of epilepsy, but it can be caused by other reasons too. 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