Seizure are characterized by an abnormal communication between cells within the brain. Depending upon where the electrical misfiring within the brain is occurring, seizures can range from twitching of a limb or a brief loss of consciousness to full-blown jerking movements.
While individuals who have epilepsy experience seizures, not everyone who has a seizure has epilepsy. Seizures can occur in anybody, however, some individuals are at a higher risk than others. Having one of the following may place you at a higher risk of having a seizure (although it does not necessarily mean that you will have one):
- Very high or very low blood sugar levels
- Stroke
- Low oxygen levels (such as severe asthma, chronic obstructive pulmonary disease, or any other condition that prevents you from getting adequate oxygen)
- Infections of the central nervous system (such as meningitis or encephalitis)
- High fevers
- Substance abuse or drug overdose (examples include cocaine, amphetamines)
- Alcohol and substance abuse withdrawal
- Certain medications
- Head injury
- Brain tumors/brain cancer
- Certain metabolic disorders (such as low calcium levels, low sodium levels, or other electrolyte imbalance)
- Neurodegenerative diseases (Alzheimer’s disease, Parkinson’s disease, multiple sclerosis)
Source:
Braunwald E, Fauci ES, et al. Harrison’s Principles of Internal Medicine. 16th ed. 2005.
