Brain Abnormalities
Structural abnormalitiesin the brain, such as brain tumors, cysts, or malformations, can lead to epilepsy. Brain injuries from trauma, strokes, or infections can also increase the risk of seizures.
Seizure disorder, also referred to as epilepsy. It is a condition of the brain that leads to recurring seizures. In the United States, an estimated 1.2% of people have active epilepsy, and it can affect individuals of all genders and ages. Symptoms of epilepsy can differ from person to person, with some individuals experiencing a loss of awareness, while others do not. Some people may stare blankly for a few seconds, and others may have repetitive arm or leg movements, known as convulsions.
It is a chronic, non-communicable neurological disease that affects 50 million people worldwide. Seizures occur frequently, which are short bouts of involuntary movements that may affect one part of the body (partial) or the entire body (generalized) and can cause loss of consciousness and control of bowel and bladder movements.
During seizure episodes, a group of brain cells undergo excessive electrical discharges. Such discharges can occur in different parts of the brain. It is not uncommon for people to have only one seizure throughout their lifetime (up to 10% of people worldwide will have one seizure). Two or more unprovoked seizures constitute epilepsy.
Structural abnormalitiesin the brain, such as brain tumors, cysts, or malformations, can lead to epilepsy. Brain injuries from trauma, strokes, or infections can also increase the risk of seizures.
Withdrawal from certain substances, such as alcohol or drugs, can cause seizures, especially if the person is addicted to those substances.
Uncontrolled or excessive doses of some medications can lower the seizure threshold and lead to seizures
Some metabolic disorders, such as phenylketonuria (PKU) or low blood sugar (hypoglycemia), can trigger seizures.
Prior to the onset of a seizure, individuals with focal seizures may experience warning signs known as aura. These warning signs can take on various forms such as a feeling in the stomach, emotions like fear, déjà vu, a taste, a smell or even visual cues such as flashing lights, colors, or shapes. Additionally, some people may experience dizziness, loss of balance, or hallucinations. Seizures are classified as either focal or generalized, based on where and how the brain activity causing the seizure originates. Focal seizures occur when the seizure is caused by activity in only one area of the brain.