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What diseases can be detected through an electroencephalogram (EEG) test?

Dec 30, 2024 Source: Cainiu Health
Dr. Lv Zhiqin
Introduction
Under normal circumstances, EEG refers to an electroencephalogram examination. An EEG may detect diseases such as sleep disorders, encephalitis, epilepsy, schizophrenia, and brain tumors. If discomfort occurs, it is recommended to seek timely medical attention and undergo symptomatic treatment under the guidance of a qualified physician. It is also advised to maintain a calm mindset and relax the entire body's muscles to facilitate a smooth EEG examination.

Generally speaking, EEG refers to electroencephalography (EEG) examination. An EEG examination may detect diseases such as sleep disorders, encephalitis, epilepsy, schizophrenia, and brain tumors. If discomfort symptoms occur, it is recommended to seek timely medical consultation and undergo appropriate treatment under the guidance of a qualified physician. Detailed analysis is as follows:

1. Sleep Disorders

Sleep disorders refer to abnormal manifestations during sleep, such as insomnia and hypersomnia. During EEG examination, by recording brain activity throughout the sleep process, different sleep stages can be distinguished, and abnormalities such as disrupted sleep structure, frequent awakenings, and fragmented sleep can be identified.

2. Encephalitis

Encephalitis is an inflammatory lesion caused by pathogen invasion of brain parenchyma, which may be triggered by infections such as viruses or bacteria. Patients' EEGs often show diffuse or focal abnormalities, such as increased slow-wave activity, which helps physicians assess the severity and extent of brain inflammation.

3. Epilepsy

Epilepsy is a chronic disorder caused by abnormal discharge of neurons in the brain, characterized by recurrent epileptic seizures. Patients' brain neurons exhibit abnormal, excessively synchronized discharges, which manifest on EEG as typical epileptiform discharges, such as sharp waves, spike waves, and spike-and-slow-wave complexes.

4. Schizophrenia

Schizophrenia is a mental disorder characterized by impairments in thinking, emotions, behavior, and other areas. Patients may exhibit mild EEG abnormalities, such as increased slow-wave activity, which can provide auxiliary information for the diagnosis and treatment of mental disorders.

5. Brain Tumor

A brain tumor is a neoplastic lesion of intracranial tissue, including both benign and malignant tumors. Brain tumors may lead to localized abnormalities in brain electrical activity, manifesting during EEG examination as focal slow waves or epileptiform discharges.

It is recommended to maintain a calm mindset and relax the entire body's muscles, which can help ensure a smooth EEG examination.

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