Psychiro eggs have a debilitating defense mechanism, exposure to these eggs causes disorientating headaches. Prolonged exposure (longer than an hour) will turn these headaches into full blown migraines. Advice from the SARC is to not interact with Psychiro eggs unless absolutely necessary.
The Psychiro is surrounded by terrifying, swirling crystals that are sharper than a diamond blade. When threatened, their crystals organize themselves into patterns around the creature to protect itself. If the attacker continues to engage, it's often a losing battle for them—for they'll often end up with sometimes fatal cuts.
The lesson is simple: do not threaten a Psychiro and leave it be.