epiphenomenon

noun3

1. •
   An activity, process, or state that is the result of another; a by-product, a consequence.

   • Yet I would suggest that philosophical and even medical curiosity are only epiphenomenons of another condition that brought deafness to cultural attention. — 1997
2. •
   A mental process or state that is an incidental by-product of physiological events in the brain or nervous system.

   • According to this hypothesis, mind is a ‘collateral product’ of the physical, an ‘epiphaenomenon’ accompanying, but never causally affecting, the physical series of phaenomena. — 1900
3. •
   A symptom that develops during the course of a disease that is not connected to the disease.

   • EPIPHAENOMENA, […] Signs in Diseases which appear afterwards. — 1721