During a nocturnal seizure, a person may:
- cry out or make unusual noises, especially right before the muscles tense.
- suddenly appear very rigid.
- wet the bed.
- twitch or jerk.
- bite their tongue.
- fall out of the bed.
- be difficult to wake after the seizure.
- be confused or display other unusual behaviors after a seizure.
It's believed that sleep seizures are triggered by changes in the electrical activity in your brain during certain stages of sleeping and waking. Nighttime seizures occur most often in the early morning around 5 a.m. to 6 a.m. and occur least often shortly after falling asleep.
Some people with epilepsy have 'asleep seizures' (sometimes called 'nocturnal seizures'), that happen when they are asleep, as they are falling asleep or as they are waking up. Frontal lobe epilepsy is a type of epilepsy where seizures can commonly happen during periods of NREM sleep as well as when awake.
Nocturnal seizures are often unnoticed because the patient is asleep when they happen. However, there are signs that may suggest the patient's is experiencing these seizures, including: Loss of bladder control. Biting their tongue.
Absence seizures involve brief, sudden lapses of consciousness. They're more common in children than in adults. Someone having an absence seizure may look like he or she is staring blankly into space for a few seconds. Then, there is a quick return to a normal level of alertness.
During the postictal period, you may be sleepy. You may have problems with vision or speech, and may have a bad headache, fatigue, or body aches. Not all of these phases occur in everyone with this type of seizure.
Or, can you die from a seizure in your sleep? The short answer is yes, but while possible, death from epilepsy is also rare.
An electroencephalogram (EEG).
In this test, doctors attach electrodes to your scalp with a paste-like substance. The electrodes record the electrical activity of your brain, which shows up as wavy lines on an EEG recording. The EEG may reveal a pattern that tells doctors whether a seizure is likely to occur again.
Seizures symptoms vary and can include a sudden change in awareness or full loss of consciousness, unusual sensations or thoughts, involuntary twitching or stiffness in the body or severe stiffening and limb shaking with loss of consciousness (a convulsion.)
Random hypnic jerks and twitches in sleep are completely normal and quite common. They usually don't indicate an underlying health issue and are simply a muscle contraction during sleep that ranges from mild to intense.
Most seizures last between 30 seconds and two minutes and will not require any emergency medical attention. However, if someone is experiencing a seizure that lasts longer than two minutes, or they lose consciousness and it does not come back right after the seizure, you should call 911 right away.
“If someone around you has a seizure, first focus on making sure he is safe,” she says. “Put a pillow behind his head so he doesn't hurt himself. Don't hold him down and never put anything in his mouth. Once it's over, the person may be very disoriented.”
The type of seizure depends on the cause. If you have a seizure for the first time, get medical attention as soon as possible. A healthcare professional can help determine the underlying cause and provide a treatment plan, if needed.
Prodrome: Some people may experience feelings, sensations, or changes in behavior hours or days before a seizure. These feelings are generally not part of the seizure, but may warn a person that a seizure may come.
In general, the actual experience of having a seizure does not hurt. Pain during seizures is rare . Some types of seizures make you lose consciousness.
Seizures in adults with no seizure history can be caused by a number of factors ranging from high blood pressure, drug abuse and toxic exposures to brain injury, brain infection (encephalitis) and heart disease.
Simple focal seizures: They change how your senses read the world around you: They can make you smell or taste something strange, and may make your fingers, arms, or legs twitch. You also might see flashes of light or feel dizzy. You're not likely to lose consciousness, but you might feel sweaty or nauseated.
A simple partial seizure can cause: a general strange feeling that's hard to describe. a "rising" feeling in your tummy – like the sensation in your stomach when on a fairground ride. a feeling that events have happened before (déjà vu)
If you have already been diagnosed with epilepsy then yes, anxiety can cause seizures. Severe stress is a very common seizure trigger, and those with severe anxiety often experience severe stress. However, it should be noted that this is far more common with those who already have epilepsy.
More than 70% of people with epilepsy report post-ictal (after-seizure) complications, including confusion, fear, exhaustion, headache, emotional reactivity, memory problems and behavioral changes. Some last an hour; others can last for days.
Having tests like an MRI (magnetic resonance imaging) scan to look at the brain and EEG (electroencephalogram) tests to record the electrical activity of the brain are very helpful to diagnose types of seizures and epilepsy properly.
Emotional stress also can lead to seizures. Emotional stress is usually related to a situation or event that has personal meaning to you. It may be a situation in which you feel a loss of control. In particular, the kind of emotional stress that leads to most seizures is worry or fear.
Hypnic jerks or sleep starts are benign myoclonic jerks that everyone experiences sometimes in a lifetime. Although they resemble the jerks of myoclonic seizures, they occur on falling asleep and are just benign nonepileptic phenomena.
There are a number of reasons that we may wake up feeling shaky and experiencing trembling, and whilst this can be quite alarming, it is often not due to any emergency cause. The most common reasons that we may experience shaking are due to low blood sugar levels and anxiety, as you have mentioned.