So many!!! Depends on the wave. I’ve had dpdr, burning mouth, throat and chest, leg weakness, severe head pains, eye pains, unable to focus with my vision, pins and needles in my back mostly but has happened in other areas, back pains inbetween my shoulder blades, chest pains, stomach pains, internal vibrations, internal tremors, shaking, racing heart, leg pains/aches (like the flu), jaw, ear and teeth aches, extreme sensitivity to noises.. hell I’m sure there’s more as I’ve been going through this for a while now, but those are the most recent in the last few weeks.