An autonomic seizure causes changes in involuntary bodily functions like your heart rate, pupil dilation, breathing, blood pressure, sweating and also gastrointestinal symptoms such as vomiting or nausea.
Other things that an autonomic seizure can look like and cause include..
Tachycardia which is a rapid heart rate.
Bradycardia which is a slow heart rate.
Palpitations which is a feeling of a racing or fluttering heart.
Changes in your blood pressure which can be either an increase in blood pressure or decrease in blood pressure.
Cyanosis which is a bluish discoloration of your skin, that often occurs around your lips and fingernails due to low oxygen levels.
Other things that can occur with an autonomic seizure are respiratory changes such as tachypnea which is rapid or shallow breathing, altered respiration, difficulty breathing, hyperventilation or hypoventilation, coughing or gagging and gastrointestinal issues such as nausea and vomiting, abdominal pain or discomfort and urge to urinate or defecate and feeling sick and retching.
Excessive sweating, redness of the face or skin, paleness of the skin, goosebumps, pupil dilation or constriction.
Other possible things that can occur with autonomic seizure are excessive salivation, goosebumps, a feeling of fullness or discomfort in your upper abdomen, changes in temperature, drooling, crying, urge to urinate or have a bowel movement and possible loss of control of the bladder or bowels "incontinence".
An autonomic seizure is an epileptic seizure that mainly manifests through altered autonomic function and impacts involuntary bodily processes such as heart rate, blood pressure and breathing.
Autonomic seizures can range from subtle changes to severe and even life threatening events.
Autonomic seizures can also occur in conjunction with other types of seizures such as focal seizures and can also be a key diagnostic clue or even cause confusion in differential diagnosis.