I am in Neurophysiology. I do long-term electroencephalographic monitoring of patients with seizures. The term "Pseudoseizures" has fallen into disfavor, and the term replacing it is "Non-epileptic seizures."

The only way to distinguish between seizures and non-epileptic seizures is to do long-term monitoring. Patients are admitted as in-patients in the Epilepsy Monitoring Unit (EMU) of a hospital. Electrode leads are put on the scalp of their head - typically a total of 28 leads. They are fastened on top of the skin with a special glue. The equipment is put in a backpack and the patient is usually free to walk around their room. The goal is for the patient to have their seizures while hooked up. Most EMU studies last a minimum of three days, but it can be as long as seven days. Once the neurologist is satisfied that the patient has had a sufficient number of "events" that are representative of what the patient experiences, then a diagnosis can be made whether the events are seizures or non-epileptic seizures. A genuine seizure will be captured by the electrical activity generated by the brain, which is transmitted by the electrodes the patient is wearing, and recorded for the neurologists review.

There are many seizure-types. Some can be simple and brief staring spells, others can be the classic stiffening and jerking. Still others can include symptoms like sudden, unexplainable fear, de ja vu, unusual smells and tastes, and even fits of laughter. Not all seizures include loss of consciousness.

Anxiety can cause seizure-like symptoms that are non-epileptic, usually as a result of 'over-breathing' or hyperventilation, which can accompany anxiety.

Since you describe being unaware, it's possible that you are having what we call "absence" seizures. They are usually brief - maybe 3 - 5 seconds. The patient will have what we call a "behavioral arrest" where they literally stop while in action - and when it's over - they resume right where they left off, but are completely unaware that the "pause" ever happened. This type of epilepsy usually starts in childhood. It's often outgrown, but can persist into adulthood.

I would suggest that you see a neurologist, who will hopefully order an outpatient electroencephalogram (EEG). This is a test that usually lasts 1.5 - 2 hrs (45 min-1hr for hookup, and 30min-1hr to run the test). If that test does not produce diagnostic results, that's when they will usually start talking about long-term monitoring in order to capture the events.