Definition of brainsickness in English:

brainsickness

noun

  • The state of being sick in the mind, mental illness or disturbance, madness.

Origin

Mid 16th century; earliest use found in Thomas Paynell (d. ?1564), translator. Partly from brainsick + -ness, and partly (especially in later use) from brain + sickness.

Pronunciation

brainsickness

/ˈbreɪnsɪknɪs/