Best Doctor List Near You for Electroencephalogram (eeg) in Porto alegre

An electroencephalogram (EEG) is a diagnostic test that measures and records electrical activity in the brain. Using small, non-invasive electrodes placed on the scalp, an EEG detects and amplifies electrical impulses generated by brain cells. These impulses are then displayed as waveforms on a computer screen or printed on paper, providing insights into the brain's electrical patterns and activity. EEGs are commonly used to diagnose and monitor neurological conditions such as epilepsy, seizures, sleep disorders, and brain tumors. They are also valuable in evaluating unexplained changes in mental status, such as confusion or altered consciousness, and in assessing brain function in conditions like encephalitis or head trauma. The test can help determine the origin of abnormal brain activity, guide treatment decisions, and monitor the effectiveness of interventions. Symptoms that might lead to an EEG include frequent seizures or convulsions, unexplained loss of consciousness, persistent headaches, or unusual behaviors or sensations that suggest abnormal brain activity. It is also used in sleep studies to investigate conditions such as sleep apnea, insomnia, or narcolepsy. Complications from EEGs are rare and generally minimal since the procedure is non-invasive and does not involve any significant risks. Some patients may experience mild discomfort from the electrodes or adhesive used to attach them to the scalp. In certain cases, if the patient has a history of seizures, an EEG may provoke a seizure, though this is infrequent. There is no risk of radiation exposure, and the test is considered safe for most individuals, including children and pregnant women. Preparation for an EEG may involve washing the hair and avoiding certain medications or stimulants before the test. Patients may also be asked to stay awake for a period before the procedure to help identify specific patterns of brain activity associated with sleep. Overall, an EEG is a crucial tool for assessing brain function, diagnosing neurological disorders, and guiding effective treatment strategies.