It appears to be a form of DBD (dielectric breakdown discharge). Setting aside the para-physical claims, that aspect of it seems reproducible, as a fun science demo, at least.

I consider it a given that any living organism radiates (heat) energy: there is constant energy and matter exchange with its surroundings; a foundational aspect of life. I consider it at least a possibility that by looking at this radiation, you can find correlations between balanced “health” (new age speak: intact Aura), and potential imbalances, and thus that it may work as a diagnostic tool.