Ill just be going about my day and suddenly a wave comes over me. it seems like a panic attack, dizziness and such. what are some triggers of anxiety?

Un- or Conscious or : Some purely physical conditions could underlie those symptoms, so a good exam might be a help. But if that shows nothing, it's likely emotional whether conscious or not. Thoughts alone can be triggers of threat (or those very things) can start a cascade of chemicals & hormones. A therapist can help zero in on your internal experiences to find the issues. Then you may begin to resolve them. Or meds.

Can be spontaneous : While panic attacks can certainly be spontaneous, they are often triggered by thoughts going on in your mind, or things that you see in your environment, whether conscious or not. The primary themes that trigger panic attacks are loss, death, abandonment, and separation. Please make sure you see both a psychiatrist and a psychologist for treatment. They will outline a full treatment regimen for you to include medication, psychotherapy, perhaps dietary and exercise recommendations and even nonconventional therapies.

? Aura: While i agree that anxiety certainly can present as you describe; an aura to a seizure is also a consideration. An aura is a transient neurologic symptom (i.e. Dizziness, panic, impending doom...) which usually lasts seconds and may or may not lead to altered awareness. You may want to meet with a neurologist and obtain an eeg which is noninvasive and can be informative. Good luck and well wishes.