<unk>  (SAS) or<unk>  sickness is a condition experienced by as many as half of all<unk>  travelers during their<unk>  to weightlessness once in orbit. It is the opposite of terrestrial motion sickness since it occurs when the environment and the person appear visually to be in motion relative to one another even though there is no corresponding sensation of bodily movement originating from the vestibular system.
Space adaptation syndrome
Foreign accent syndrome
Serotonin syndrome
Cannabinoid hyperemesis syndrome
Adrenergic storm
Vasoplegic syndrome
Cholinergic crisis
Monofixation syndrome