Nessus transits can bbring on anxiety and panic attacks.Here's what I found on Nessus:
The awareness of our vulnerability against darkness, abuse, and emotional death. The return of karma; situations that travel circular paths, or extend with unforeseen consequences. Conspiracy with a point of origin. The healing of abuse, including insidious kind that doesn't seem like much, until one looks closely; and the kind that was obviously so, but potentially overlooked. Nessus talks about abuse patterns in the family of origin, and how they manifest psychologically in adults.
In transit:
* A connection with strong and powerful emotions, affects, passions and jealousy reveal a relation between Nessus and Pluto
* Nessus is probably the strongest Centaur among the first three, and often a "nasty" guy
* the feeling to do something "rightous" even if it's cruel (assassins or intruders often think so) and in the worst case an absolute unhuman, blind fanatism
* to be forced to deep and sudden (this is non-Plutonian!) transformation by intense and sudden shock and pain
* the boomerang-effect: bad actions done in the past, catch us up (some karma-circle)
* a clear tendency to over-react, to crack up, to have hysterics, to run amok, to explode emotionally, because someone hits/hurts you at the very nerve. For a moment you feel hot and not like yourself.
* Panic attacks (as a result of anxiety against deep affects)
* the theme-complex of intrigue and conspiracy: treachery, trick, to take advantage of other's weakness. Revenge, lie and falsehood
* Nessus joins us with occult primordial forces and energies, which go far beyond our mental, conscious and intellectual capacity for understanding. Therefore we first experience fear until we understand it later.
* the border(-line) to madness. See for example movies like "Mad Max", "Lethal Weapon", "Die Hard", where brute force in combination to super-natural self-control with madness is shown (there is also a relation to Asbolus I think).
* to overcome anxiety and force with the mean of nearly super-natural will, strength and braveness
* there seem to be some relation between Nessus and longterm skin deseases: nettle rash, strong itching, pain, burning of the skin, high sensitivity against sunrays, pustules, growth (often connected with troubles in relationships) and allergies
* Nessus opens us the gate into Hades, the death and Pluto's underworld, towards the shadow-world of ghosts and lost souls.
But it also reveals the other, light and good side of the so-called "evil". It's only a denied and repressed, undissolved, "dark" shadow-like energy of the soul, which needs to be re-integrated into our personality to be complete and healthy/authentic (this shows us the closeness of Nessus to Pluto).
* There is an obvious parallel between Nessus and the fairy man Charon. Therefore I think Nessus is a leader and guide to hidden and deep energies of regeneration and rebirth and therefore Pluto's helper or preparer in this way and process.
* Nessus in a chart brings up old issues of grief and loss thought to be buried long ago,
which erupt in a monstrous or poisonous way... Nessus is the pitchblack face of Pluto made manifest through Saturn. The final outcome is gaining immortality."